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Class   968HOROLOGY
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[List of Pre Grant Publications for class 968 subclass 2][List of Patents for class 968 subclass 2]2 DRIVING MECHANISMS (DRIVING MECHANISMS FOR TURKISH TIME SUBCLASS 167; DRIVING MECHANISMS IN THE HANDS SUBCLASS 396; DRIVING MECHANISMS FOR PHONOGRAPHIC APPARATUS G11B 19/00; SPRINGS, DRIVING WEIGHT ENGINES F03G; DRIVING MECHANISMS FOR CINEMATOGRAPHY G03B 1/00; DRIVING MECHANISMS; DRIVING MECHANISMS FOR TIME FUSES FOR MISSILES F42C; DRIVING MECHANISMS FOR TOYS A63H 11/23) [G04B 1/00]
[List of Pre Grant Publications for class 968 subclass 3][List of Patents for class 968 subclass 3]3 Subclass 3 indent level is 1 With driving weight [G04B 1/02]
 [List of Pre Grant Publications for class 968 subclass 4][List of Patents for class 968 subclass 4]4 Subclass 4 indent level is 2 Mechanisms in which the clockwork acts as the driving weight [G04B 1/04]
 [List of Pre Grant Publications for class 968 subclass 5][List of Patents for class 968 subclass 5]5 Subclass 5 indent level is 2 With several weights (winding up several weights simultaneously subclass 23) [G04B 1/06]
 [List of Pre Grant Publications for class 968 subclass 6][List of Patents for class 968 subclass 6]6 Subclass 6 indent level is 2 Driving weights; chains; chain wheels; arbors for chain wheels (wheels and spindles in general F16F) [G04B 1/08]
[List of Pre Grant Publications for class 968 subclass 7][List of Patents for class 968 subclass 7]7 Subclass 7 indent level is 1 With mainspring (synchronous motors with power reserve subclass 559; springs in general F16F) [G04B 1/10]
 [List of Pre Grant Publications for class 968 subclass 8][List of Patents for class 968 subclass 8]8 Subclass 8 indent level is 2 Having a form other than a helix (subclasses 9 and 10 take precedence) [G04B 1/10B]
 [List of Pre Grant Publications for class 968 subclass 9][List of Patents for class 968 subclass 9]9 Subclass 9 indent level is 2 With several mainsprings (installations with a mainspring and an auxiliary spring subclass 19; winding up several mainsprings simultaneously subclass 28) [G04B 1/12]
[List of Pre Grant Publications for class 968 subclass 10][List of Patents for class 968 subclass 10]10 Subclass 10 indent level is 2 Mainsprings; bridles therefor (mainsprings with bridles subclass 14; alloys C22C; springs in general F16F; constructions for compensation of changes in the motive power of the mainspring subclass 18; construction of the hairspring subclass 111; arrangements facilitating the removal of the mainspring subclass 291) [G04B 1/14]
[List of Pre Grant Publications for class 968 subclass 12][List of Patents for class 968 subclass 12]12 Subclass 12 indent level is 2 Barrels; arbors; barrel axles (arrangements facilitating the removal of the mainspring subclass 291) [G04B 1/16]
[List of Pre Grant Publications for class 968 subclass 14][List of Patents for class 968 subclass 14]14 Subclass 14 indent level is 2 Constructions for connecting the ends of the mainsprings with the barrel or the arbor (mainsprings and bridles therefor subclass 10; clamping the hairspring on the regulator subclass 121; clamping the hairspring on the arbor subclass 135) [G04B 1/18]
[List of Pre Grant Publications for class 968 subclass 18][List of Patents for class 968 subclass 18]18 Subclass 18 indent level is 2 Compensation of changes in the motive power of the mainspring (by mechanical shaping of the mainspring subclass 10; automatic regulation of the pendulum subclass 115; of the regulator subclass 211) [G04B 1/22]
 [List of Pre Grant Publications for class 968 subclass 20][List of Patents for class 968 subclass 20]20 Subclass 20 indent level is 1 With both mainsprings and driving weights (winding up several mainsprings or driving weights simultaneously subclass 28) [G04B 1/24]
[List of Pre Grant Publications for class 968 subclass 21][List of Patents for class 968 subclass 21]21 Subclass 21 indent level is 1 Driven by liquids or gases; liquid or gaseous drives or mechanically controlled secondary clocks (winding up by pneumatic means subclass 39; winding up automatically by wind power subclass 63; winding up by electrothermal or electro-pneumatic arrangements subclass 427; thermoelectric or thermo-pneumatic driving mechanisms subclass 495) [G04B 1/26]
 [List of Pre Grant Publications for class 968 subclass 22][List of Patents for class 968 subclass 22]22 Subclass 22 indent level is 2 Clockwork systems working therewith (winding up electrical or mechanical clocks subclass 428; electrical clockwork installations subclass 524); winding [G04B 1/26B]
[List of Pre Grant Publications for class 968 subclass 23][List of Patents for class 968 subclass 23]23 NORMAL WINDING OF CLOCKWORKS BY HAND OR MECHANICALLY; WINDING UP SEVERAL MAINSPRINGS OR DRIVING WEIGHTS SIMULTANEOUSLY (SEE NOTE ATTACHED TO THIS SUBCLASS)
 [List of Pre Grant Publications for class 968 subclass 24][List of Patents for class 968 subclass 24]24 Subclass 24 indent level is 1 By pushbutton (crown combined with pushbutton subclass 34; construction of pushbutton subclass 35; waterproof pushbutton subclass 341) [G04B 3/00B]
 [List of Pre Grant Publications for class 968 subclass 25][List of Patents for class 968 subclass 25]25 Subclass 25 indent level is 1 By lever mechanism [G04B 3/00C]
 [List of Pre Grant Publications for class 968 subclass 26][List of Patents for class 968 subclass 26]26 Subclass 26 indent level is 1 By draw mechanism [G04B 3/00D]
 [List of Pre Grant Publications for class 968 subclass 27][List of Patents for class 968 subclass 27]27 Subclass 27 indent level is 1 Mechanical winding up; winding up with special equipment (removably- mounted keys subclass 29; winding up equipment for clocks with automatic winding up equipment subclass 40) [G04B 3/00F)
 [List of Pre Grant Publications for class 968 subclass 28][List of Patents for class 968 subclass 28]28 Subclass 28 indent level is 1 Winding up several mainsprings or driving weights simultaneously (driving mechanisms with several weights subclass 5; driving mechanisms with several mainsprings subclass 9; driving mechanisms with a mainspring and a secondary spring subclass 19; driving mechanisms with a mainspring driving weights subclass 20; winding up the striking mechanisms with the clockwork and vice versa subclass 228) [G04B 3/00G]
 [List of Pre Grant Publications for class 968 subclass 29][List of Patents for class 968 subclass 29]29 Subclass 29 indent level is 1 Removably mounted keys or the like (special tools for clockworks with difficult access, universal keys for watches with a small crown subclass 27; keys with means preventing overwinding subclass 36; protecting means preventing overwinding subclass 38) [G04B 3/02]
[List of Pre Grant Publications for class 968 subclass 30][List of Patents for class 968 subclass 30]30 Subclass 30 indent level is 1 Rigidly mounted keys, knob, or crowns (jointed winding stem subclass 322) [G04B 3/04]
 [List of Pre Grant Publications for class 968 subclass 31][List of Patents for class 968 subclass 31]31 Subclass 31 indent level is 2 Construction of crowns for rotating movement; connection with the winding stem; winding stems [G04B 3/04B]
 [List of Pre Grant Publications for class 968 subclass 32][List of Patents for class 968 subclass 32]32 Subclass 32 indent level is 2 Locking of the operating element, also by mounting in a concealed place [G04B 3/04C]
 [List of Pre Grant Publications for class 968 subclass 33][List of Patents for class 968 subclass 33]33 Subclass 33 indent level is 2 Storing the operating element, also bringing it out of storage [G04B 3/04D]
 [List of Pre Grant Publications for class 968 subclass 34][List of Patents for class 968 subclass 34]34 Subclass 34 indent level is 2 Operation by rotation and axial movement with extra function of axial shift of operating element, e.g., crown combined with push button, etc. (winding up by push button subclass 24) [G04B 3/04F]
 [List of Pre Grant Publications for class 968 subclass 35][List of Patents for class 968 subclass 35]35 Subclass 35 indent level is 2 Operation exclusively by axial movement of a pushbutton, e.g., for chronographs, etc. (winding up by pushbutton subclass 24; hermetically sealed pushbutton subclass 341) [G04B 3/04G]
 [List of Pre Grant Publications for class 968 subclass 36][List of Patents for class 968 subclass 36]36 Subclass 36 indent level is 1 Keys or the like with means preventing overwinding (protecting devices arranged in, or attached to, the barrel subclass 16; in connection with automatic winding devices subclass 20; construction of removably mounted keys subclass 29; means preventing overwinding, including those attached to the case, subclass 38; protecting means subclass 71; protection against overwinding for electrical winding up arrangements for mechanical clocks subclass 443) [G04B 3/06]
[List of Pre Grant Publications for class 968 subclass 37][List of Patents for class 968 subclass 37]37 Subclass 37 indent level is 1 By parts of the cases (setting the time-indicating means by parts of the case subclass 248) [G04B 3/08]
 [List of Pre Grant Publications for class 968 subclass 38][List of Patents for class 968 subclass 38]38 Subclass 38 indent level is 2 Protecting means preventing overwinding (arranged in, or attached to, the barrel subclass 16; in connection with keys subclass 36; in connection with automatic winding devices subclass 66; protection subclass 71; of electrical winding up arrangements for mechanical clocks subclass 443) [G04B 3/10]
 [List of Pre Grant Publications for class 968 subclass 39][List of Patents for class 968 subclass 39]39 Subclass 39 indent level is 1 By mechanical means, e.g., pneumatic motor, etc. (winding up with electric or electromechanical means subclass 425; liquid or gas driving mechanisms subclass 21; automatic winding up by wind power subclass 62) [G04B 3/12]
[List of Pre Grant Publications for class 968 subclass 40][List of Patents for class 968 subclass 40]40 AUTOMATIC WINDING UP (NORMAL WINDING UP BY HAND OR MECHANICALLY SUBCLASS 23; AUTOMATIC WINDING IN COMBINATION WITH HAND WINDING SUBCLASS 68; ELECTRICAL WINDING OF MECHANICAL CLOCKWORKS SUBCLASS 443; ADVERTISING BY MAKING USE OF VIBRATIONS OR SHOCKS OF LAND VEHICLES G09F 21/04) [G04B 5/00]
 [List of Pre Grant Publications for class 968 subclass 41][List of Patents for class 968 subclass 41]41 Subclass 41 indent level is 1 By moving of parts of the clockwork which are not primarily for winding up [G04B 5/00B]
 [List of Pre Grant Publications for class 968 subclass 42][List of Patents for class 968 subclass 42]42 Subclass 42 indent level is 1 By relative movement between watchbands, case, or parts of the case [G04B 5/00C]
 [List of Pre Grant Publications for class 968 subclass 43][List of Patents for class 968 subclass 43]43 Subclass 43 indent level is 1 Clockworks, which wind up by driving the function, e.g., perpetua mobilia, etc. (see also F03G 7/10) [G04B 5/00K]
[List of Pre Grant Publications for class 968 subclass 44][List of Patents for class 968 subclass 44]44 Subclass 44 indent level is 1 By self-winding caused by the movement of the watch (bearings, suspensions for oscillating weights subclass 53; mechanisms for transformation of an oscillating movement into a rotating movement in only one direction subclass 73) [G04B 5/02]
[List of Pre Grant Publications for class 968 subclass 45][List of Patents for class 968 subclass 45]45 Subclass 45 indent level is 2 By oscillating weights the movement of which is limited (setting the time indicating means with the aid of a rocking bar subclass 248) [G04B 5/04]
[List of Pre Grant Publications for class 968 subclass 48][List of Patents for class 968 subclass 48]48 Subclass 48 indent level is 2 By oscillating weights the movement of which is not limited [G04B 5/10]
[List of Pre Grant Publications for class 968 subclass 51][List of Patents for class 968 subclass 51]51 Subclass 51 indent level is 2 Construction of the weights [G04B 5/16]
[List of Pre Grant Publications for class 968 subclass 53][List of Patents for class 968 subclass 53]53 Subclass 53 indent level is 2 Supports, suspensions, or guide arrangements, for oscillating weights (transmission of the movement of the winding up weight to the mainspring subclasses 45 and 48; support of the driving weight by protecting means which prevent overwinding, e.g., by interposing of a glide clutch, etc. subclass 66; bearings in general subclass 284) [G04B 5/18]
[List of Pre Grant Publications for class 968 subclass 62][List of Patents for class 968 subclass 62]62 Subclass 62 indent level is 1 By movement of other objects, e.g., by opening a handbag, by opening a case, by opening a door, etc; winding up by wind power [G04B 5/20]
 [List of Pre Grant Publications for class 968 subclass 63][List of Patents for class 968 subclass 63]63 Subclass 63 indent level is 2 By liquids or gases (driven by liquids or gases subclass 21; winding up by pneumatic motor subclass 39; winding up by electrothermal or electro-pneumatic driving means subclass 427; driving of the clockwork by such means subclass 495) [G04B 5/20D]
 [List of Pre Grant Publications for class 968 subclass 64][List of Patents for class 968 subclass 64]64 Subclass 64 indent level is 2 By rotating axles, e.g., tachometers (direct drive of the clockwork, e.g., without winding up of a spring or the like by a rotating axle, etc. subclass 68; combination with measuring instruments in general subclass 411) [G04B 5/20F]
 [List of Pre Grant Publications for class 968 subclass 65][List of Patents for class 968 subclass 65]65 Subclass 65 indent level is 1 By thermometric, barometric, or like effects or alterations (by electrothermal or electro-pneumatic driving means subclass 427; driving the clockwork by such means subclass 495) [G04B 5/22]
[List of Pre Grant Publications for class 968 subclass 66][List of Patents for class 968 subclass 66]66 Subclass 66 indent level is 1 Protecting means preventing overwinding (arranged in, or attached to, the barrel subclass 16; in connection with keys or the like subclass 36; in connection with parts of the cases subclass 38; support of the moving weight subclass 53; protection means subclass 71; electrical driving means for mechanical clockworks subclass 443) [G04B 5/24]
 [List of Pre Grant Publications for class 968 subclass 67][List of Patents for class 968 subclass 67]67 Subclass 67 indent level is 2 By locking the moving weight [G04B 5/24B]
 [List of Pre Grant Publications for class 968 subclass 68][List of Patents for class 968 subclass 68]68 COMBINED NORMAL AND AUTOMATIC WINDING UP (NORMAL WINDING UP BY HAND OR MECHANICALLY SUBCLASS 23; AUTOMATIC WINDING UP SUBCLASS 40; ELECTRIC WINDING UP OF MECHANICAL CLOCKWORKS SUBCLASS 427) [G04B 7/00]
[List of Pre Grant Publications for class 968 subclass 69][List of Patents for class 968 subclass 69]69 SUPERVISION OF THE STATE OF WINDING, E.G., INDICATING THE AMOUNT OF WINDING, ETC, [G04B 9/00]
 [List of Pre Grant Publications for class 968 subclass 70][List of Patents for class 968 subclass 70]70 Subclass 70 indent level is 1 By optical indication of the amount of winding [G04B 9/00B]
[List of Pre Grant Publications for class 968 subclass 71][List of Patents for class 968 subclass 71]71 Subclass 71 indent level is 1 Devices controlled by such state, e.g., device affording protection means against overwinding, etc. (protecting means preventing overwinding arranged in or on the barrel subclass 16; protecting means in connection with keys or the like subclass 36; in connection with parts of the cases subclass 38; in connection with automatic winding devices subclass 66; electric winding up of mechanical clockworks subclass 443) [G04B 9/02]
 [List of Pre Grant Publications for class 968 subclass 72][List of Patents for class 968 subclass 72]72 Subclass 72 indent level is 2 Acoustical or electrical indicating means [G04B 9/02B]
[List of Pre Grant Publications for class 968 subclass 73][List of Patents for class 968 subclass 73]73 CLICK DEVICES; STOP CLICKS; CLUTCHES (MECHANISMS FOR WINDING UP BY HAND SUBCLASS 23; AUTOMATIC WINDING UP SUBCLASS 40;) [G04B 11/00]
[List of Pre Grant Publications for class 968 subclass 74][List of Patents for class 968 subclass 74]74 Subclass 74 indent level is 1 Devices in which the motion of a rotating member is limited to one direction [G04B 11/00B]
[List of Pre Grant Publications for class 968 subclass 75][List of Patents for class 968 subclass 75]75 Subclass 75 indent level is 2 With a ratchet which makes contact with the rotating member by means of teeth [G04B 11/00B2]
 [List of Pre Grant Publications for class 968 subclass 77][List of Patents for class 968 subclass 77]77 Subclass 77 indent level is 2 With clamping member [G04B 11/00B3]
 [List of Pre Grant Publications for class 968 subclass 78][List of Patents for class 968 subclass 78]78 Subclass 78 indent level is 2 With friction member, e.g., click spring, etc. [G04B 11/00B4]
 [List of Pre Grant Publications for class 968 subclass 79][List of Patents for class 968 subclass 79]79 Subclass 79 indent level is 1 Ratchet construction for driving rotating members in one direction, e.g., a ratchet on an oscillating member driving a ratchet wheel, etc. [G04B 11/00C]
[List of Pre Grant Publications for class 968 subclass 80][List of Patents for class 968 subclass 80]80 Subclass 80 indent level is 1 Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power [G04B 11/00D]
 [List of Pre Grant Publications for class 968 subclass 81][List of Patents for class 968 subclass 81]81 Subclass 81 indent level is 2 With friction member, e.g., with spring action, etc. [G04B 11/00D4]
 [List of Pre Grant Publications for class 968 subclass 82][List of Patents for class 968 subclass 82]82 Subclass 82 indent level is 2 With magnetic elements [G04B 11/00D5]
[List of Pre Grant Publications for class 968 subclass 83][List of Patents for class 968 subclass 83]83 Subclass 83 indent level is 1 Clutch mechanism between two rotating members with transfer of movement in only one direction (free running devices) [G04B 11/00F]
 [List of Pre Grant Publications for class 968 subclass 84][List of Patents for class 968 subclass 84]84 Subclass 84 indent level is 2 With friction members, e.g., click spring, etc. [G04B 11/00F4]
[List of Pre Grant Publications for class 968 subclass 85][List of Patents for class 968 subclass 85]85 GEARWORK (GEARWORK FOR DRIVING THE HANDS SUBCLASS 140; CALIBERS SUBCLASS 284; DISPOSITIONS AND COMPONENTS FOR TRANSMISSION IN GENERAL F16H) [G04B 13/00]
 [List of Pre Grant Publications for class 968 subclass 86][List of Patents for class 968 subclass 86]86 Subclass 86 indent level is 1 With the choice of adjustable or varying transmission ratio [G04B 13/00B]
[List of Pre Grant Publications for class 968 subclass 87][List of Patents for class 968 subclass 87]87 Subclass 87 indent level is 1 Where rotation in one direction is changed into a stepping movement [G04B 13/00C]
 [List of Pre Grant Publications for class 968 subclass 88][List of Patents for class 968 subclass 88]88 Subclass 88 indent level is 2 With a step for each complete revolution (counters in general H03K) [G04B 13/00C2]
[List of Pre Grant Publications for class 968 subclass 89][List of Patents for class 968 subclass 89]89 Subclass 89 indent level is 1 Where a revolution in both directions is changed into a revolution in one direction [G04B 13/00D]
 [List of Pre Grant Publications for class 968 subclass 90][List of Patents for class 968 subclass 90]90 Subclass 90 indent level is 2 With two free wheel positions [G04B 13/00D2]
[List of Pre Grant Publications for class 968 subclass 91][List of Patents for class 968 subclass 91]91 Subclass 91 indent level is 1 With differential work [G04B 13/00G]
 [List of Pre Grant Publications for class 968 subclass 92][List of Patents for class 968 subclass 92]92 Subclass 92 indent level is 2 Differentials [G04B 13/00G2]
[List of Pre Grant Publications for class 968 subclass 93][List of Patents for class 968 subclass 93]93 Subclass 93 indent level is 1 Wheels; pinions; spindles; pivots (bearings subclass 271; chain wheels, spindles for chain wheels, also chains and driving weights subclass 6) [G04B 13/02]
 [List of Pre Grant Publications for class 968 subclass 94][List of Patents for class 968 subclass 94]94 Subclass 94 indent level is 2 Assembly and manufacture (assembly and manufacture of springs subclass 11; machines and tools for the manufacture of chain wheels for clocks subclass 685; component parts and manufacture of the escape wheel subclass 102; steel alloys C21C 33/00-41/00; manufacture of pinions from synthetic material B29; nonferrous alloys C22C; pinions manufactured by milling and planing B23F) operating mechanisms [G04B 13/02R]
[List of Pre Grant Publications for class 968 subclass 95][List of Patents for class 968 subclass 95]95 ESCAPEMENTS (MAGNETIC SUBCLASS 496; IN STRIKING MECHANISMS SUBCLASS 224;) [G04B 15/00]
[List of Pre Grant Publications for class 968 subclass 96][List of Patents for class 968 subclass 96]96 Subclass 96 indent level is 1 Permanently in contact with the regulating mechanism [G04B 15/02]
 [List of Pre Grant Publications for class 968 subclass 97][List of Patents for class 968 subclass 97]97 Subclass 97 indent level is 2 Cylinder escapements [G04B 15/04]
[List of Pre Grant Publications for class 968 subclass 98][List of Patents for class 968 subclass 98]98 Subclass 98 indent level is 1 Free escapements [G04B 15/06]
 [List of Pre Grant Publications for class 968 subclass 99][List of Patents for class 968 subclass 99]99 Subclass 99 indent level is 2 Lever escapements [G04B 15/08]
 [List of Pre Grant Publications for class 968 subclass 100][List of Patents for class 968 subclass 100]100 Subclass 100 indent level is 1 With constant impulses for the regulating mechanism (electrically driven pendulums with mechanical pulse transmission and constant pulse subclass 455; electrically driven pendulums with mechanical pulse transmission and constant pulse subclass 468) [G04B 15/10]
 [List of Pre Grant Publications for class 968 subclass 101][List of Patents for class 968 subclass 101]101 Subclass 101 indent level is 1 Adjusting (tools therefor subclass 665); restricting the amplitude of the lever or the like (adjusting the gear train subclass 293) [G04B 15/12]
 [List of Pre Grant Publications for class 968 subclass 102][List of Patents for class 968 subclass 102]102 Subclass 102 indent level is 1 Component parts or constructional details, e.g., construction of the lever or the escape wheel, etc; assembly and manufacture of spring subclass 11; assembly and manufacture of components, e.g., pinions, spindles, etc., subclass 94; oils for clockwork bearings in general subclass 281 [G04B 15/14]
[List of Pre Grant Publications for class 968 subclass 103][List of Patents for class 968 subclass 103]103 MECHANISMS FOR STABILIZING FREQUENCY (MAGNETIC SUBCLASS 497; IN STRIKING MECHANISMS SUBCLASS 224; STOPPING AND REGULATING OF THE RUNNING SUBCLASS 234; ELECTRICAL AND THERMOELECTRIC REGULATING MECHANISMS SUBCLASS 496) [G04B 17/00]
 [List of Pre Grant Publications for class 968 subclass 104][List of Patents for class 968 subclass 104]104 Subclass 104 indent level is 1 Regulating mechanisms where the movement is maintained by pneumatic means (oscillation generation by pneumatic means subclass 828) [G04B 17/00B]
[List of Pre Grant Publications for class 968 subclass 105][List of Patents for class 968 subclass 105]105 Subclass 105 indent level is 1 Oscillators acting by gravity, e.g., pendulum swinging in a plane, etc. (setting the pendulum to the required length subclass 115; temperature compensation for pendulums subclass 128; bearings in general, e.g., knife-edge subclass 271, etc; clocks fitted in pendulums subclass 396; imitation pendulums driven by the clock mechanism subclasses 387 and 388; pendulum ornamentation subclass 389; contacts actuated by a pendulum subclass 546; measurement of force with a pendulum G01V 7/12) [G04B 17/02]
 [List of Pre Grant Publications for class 968 subclass 106][List of Patents for class 968 subclass 106]106 Subclass 106 indent level is 2 Composite and multiple pendulums; synchronization of mechanical pendulums, (electrical synchronization G03C 3/02; pendulum systems subclass 532) [G04B 17/02B]
[List of Pre Grant Publications for class 968 subclass 107][List of Patents for class 968 subclass 107]107 Subclass 107 indent level is 1 Oscillators acting by spring tension [G04B 17/04]
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 [List of Pre Grant Publications for class 968 subclass 108][List of Patents for class 968 subclass 108]108 Subclass 108 indent level is 2 With oscillating blade springs (mechanical oscillations maintained by electromagnetic means, e.g., tuning forks, etc. subclass 548) [G04B 17/04B]