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Class   178TELEGRAPHY
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 [List of Pre Grant Publications for class 178 subclass 1][List of Patents for class 178 subclass 1]1 MISCELLANEOUS
[List of Pre Grant Publications for class 178 subclass 2R][List of Patents for class 178 subclass 2R]  2R SYSTEMS
[List of Pre Grant Publications for class 178 subclass 3][List of Patents for class 178 subclass 3]3 Subclass 3 indent level is 1 Automatic
[List of Pre Grant Publications for class 178 subclass 4][List of Patents for class 178 subclass 4]4 Subclass 4 indent level is 2 Printing
 [List of Pre Grant Publications for class 178 subclass 15][List of Patents for class 178 subclass 15]15 Subclass 15 indent level is 2 Photographic recorder
 [List of Pre Grant Publications for class 178 subclass 16][List of Patents for class 178 subclass 16]16 Subclass 16 indent level is 2 Current reversing
[List of Pre Grant Publications for class 178 subclass 17R][List of Patents for class 178 subclass 17R]  17R Subclass 17R indent level is 2 Transmitters or recorders
[List of Pre Grant Publications for class 178 subclass 18.01][List of Patents for class 178 subclass 18.01]18.01 Subclass 18.01 indent level is 1 Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry)
 [List of Pre Grant Publications for class 178 subclass 18.02][List of Patents for class 178 subclass 18.02]18.02 Subclass 18.02 indent level is 2 Error correction
[List of Pre Grant Publications for class 178 subclass 18.03][List of Patents for class 178 subclass 18.03]18.03 Subclass 18.03 indent level is 2 Writing digitizer pad
[List of Pre Grant Publications for class 178 subclass 19.01][List of Patents for class 178 subclass 19.01]19.01 Subclass 19.01 indent level is 2 Writing digitizer stylus
[List of Pre Grant Publications for class 178 subclass 20.01][List of Patents for class 178 subclass 20.01]20.01 Subclass 20.01 indent level is 2 Writing digitizer circuit
 [List of Pre Grant Publications for class 178 subclass 21][List of Patents for class 178 subclass 21]21 Subclass 21 indent level is 1 Stenographic
[List of Pre Grant Publications for class 178 subclass 23R][List of Patents for class 178 subclass 23R]  23R Subclass 23R indent level is 1 Printing
 [List of Pre Grant Publications for class 178 subclass 24][List of Patents for class 178 subclass 24]24 Subclass 24 indent level is 2 Bulletin
[List of Pre Grant Publications for class 178 subclass 25][List of Patents for class 178 subclass 25]25 Subclass 25 indent level is 2 Page
 [List of Pre Grant Publications for class 178 subclass 30][List of Patents for class 178 subclass 30]30 Subclass 30 indent level is 2 Character elements
[List of Pre Grant Publications for class 178 subclass 31][List of Patents for class 178 subclass 31]31 Subclass 31 indent level is 2 Multiple-line circuit
[List of Pre Grant Publications for class 178 subclass 33R][List of Patents for class 178 subclass 33R]  33R Subclass 33R indent level is 2 Selectors
 [List of Pre Grant Publications for class 178 subclass 35][List of Patents for class 178 subclass 35]35 Subclass 35 indent level is 2 With type-wheel recorder
[List of Pre Grant Publications for class 178 subclass 36][List of Patents for class 178 subclass 36]36 Subclass 36 indent level is 2 Recorders
 [List of Pre Grant Publications for class 178 subclass 23A][List of Patents for class 178 subclass 23A]23A Subclass 23A indent level is 2 Error detection in printers
 [List of Pre Grant Publications for class 178 subclass 43][List of Patents for class 178 subclass 43]43 Subclass 43 indent level is 1 Space induction
[List of Pre Grant Publications for class 178 subclass 45][List of Patents for class 178 subclass 45]45 Subclass 45 indent level is 1 Loaded circuit
 [List of Pre Grant Publications for class 178 subclass 46][List of Patents for class 178 subclass 46]46 Subclass 46 indent level is 2 Loading coils
[List of Pre Grant Publications for class 178 subclass 47][List of Patents for class 178 subclass 47]47 Subclass 47 indent level is 1 Harmonic or reed
 [List of Pre Grant Publications for class 178 subclass 48][List of Patents for class 178 subclass 48]48 Subclass 48 indent level is 2 Recorders and receivers
 [List of Pre Grant Publications for class 178 subclass 49][List of Patents for class 178 subclass 49]49 Subclass 49 indent level is 1 Superposed current
 [List of Pre Grant Publications for class 178 subclass 62][List of Patents for class 178 subclass 62]62 Subclass 62 indent level is 1 Chemical
[List of Pre Grant Publications for class 178 subclass 63R][List of Patents for class 178 subclass 63R]  63R Subclass 63R indent level is 1 Cable or capacity
 [List of Pre Grant Publications for class 178 subclass 63A][List of Patents for class 178 subclass 63A]63A Subclass 63A indent level is 2 Cable repeaters
 [List of Pre Grant Publications for class 178 subclass 63B][List of Patents for class 178 subclass 63B]63B Subclass 63B indent level is 2 Cable transmitters
 [List of Pre Grant Publications for class 178 subclass 63C][List of Patents for class 178 subclass 63C]63C Subclass 63C indent level is 2 Cable receivers
 [List of Pre Grant Publications for class 178 subclass 63D][List of Patents for class 178 subclass 63D]63D Subclass 63D indent level is 2 Cable mechanical structure
 [List of Pre Grant Publications for class 178 subclass 63E][List of Patents for class 178 subclass 63E]63E Subclass 63E indent level is 2 Distortion correction and artificial lines
 [List of Pre Grant Publications for class 178 subclass 63F][List of Patents for class 178 subclass 63F]63F Subclass 63F indent level is 2 Direction reversing
 [List of Pre Grant Publications for class 178 subclass 64][List of Patents for class 178 subclass 64]64 Subclass 64 indent level is 1 Coil transformer
 [List of Pre Grant Publications for class 178 subclass 65][List of Patents for class 178 subclass 65]65 Subclass 65 indent level is 1 Dynamo
[List of Pre Grant Publications for class 178 subclass 66.1][List of Patents for class 178 subclass 66.1]66.1 Subclass 66.1 indent level is 1 Alternating or pulsating current
 [List of Pre Grant Publications for class 178 subclass 116][List of Patents for class 178 subclass 116]116 Subclass 116 indent level is 2 Spark gap or arc discharge
 [List of Pre Grant Publications for class 178 subclass 117][List of Patents for class 178 subclass 117]117 Subclass 117 indent level is 2 Coherer
 [List of Pre Grant Publications for class 178 subclass 66.2][List of Patents for class 178 subclass 66.2]66.2 Subclass 66.2 indent level is 2 Transmitter keying
 [List of Pre Grant Publications for class 178 subclass 67.1][List of Patents for class 178 subclass 67.1]67.1 Subclass 67.1 indent level is 2 Modified semicycle
[List of Pre Grant Publications for class 178 subclass 69R][List of Patents for class 178 subclass 69R]  69R Subclass 69R indent level is 1 Line-clearing and circuit maintenance
 [List of Pre Grant Publications for class 178 subclass 69M][List of Patents for class 178 subclass 69M]69M Subclass 69M indent level is 2 Frequency measuring and compensating
 [List of Pre Grant Publications for class 178 subclass 69N][List of Patents for class 178 subclass 69N]69N Subclass 69N indent level is 2 Precorrectors
 [List of Pre Grant Publications for class 178 subclass 69A][List of Patents for class 178 subclass 69A]69A Subclass 69A indent level is 2 Distortion measuring
 [List of Pre Grant Publications for class 178 subclass 69B][List of Patents for class 178 subclass 69B]69B Subclass 69B indent level is 2 Interference neutralizing
 [List of Pre Grant Publications for class 178 subclass 69C][List of Patents for class 178 subclass 69C]69C Subclass 69C indent level is 2 Balancing duplex cables
 [List of Pre Grant Publications for class 178 subclass 69D][List of Patents for class 178 subclass 69D]69D Subclass 69D indent level is 2 Zero wander neutralizers
 [List of Pre Grant Publications for class 178 subclass 69E][List of Patents for class 178 subclass 69E]69E Subclass 69E indent level is 2 Leakage compensation
 [List of Pre Grant Publications for class 178 subclass 69F][List of Patents for class 178 subclass 69F]69F Subclass 69F indent level is 2 Neutralizing line capactive discharge
 [List of Pre Grant Publications for class 178 subclass 69G][List of Patents for class 178 subclass 69G]69G Subclass 69G indent level is 2 Monitoring, alarm and pilot signals
 [List of Pre Grant Publications for class 178 subclass 69H][List of Patents for class 178 subclass 69H]69H Subclass 69H indent level is 2 Reiterative
 [List of Pre Grant Publications for class 178 subclass 69K][List of Patents for class 178 subclass 69K]69K Subclass 69K indent level is 2 Misc. gas-filled tube circuits
 [List of Pre Grant Publications for class 178 subclass 69L][List of Patents for class 178 subclass 69L]69L Subclass 69L indent level is 2 Check back
 [List of Pre Grant Publications for class 178 subclass 69.6][List of Patents for class 178 subclass 69.6]69.6 Subclass 69.6 indent level is 1 Call
 [List of Pre Grant Publications for class 178 subclass 2A][List of Patents for class 178 subclass 2A]2A Subclass 2A indent level is 1 Simplex-reversing periodic
 [List of Pre Grant Publications for class 178 subclass 2B][List of Patents for class 178 subclass 2B]2B Subclass 2B indent level is 1 Code changers
 [List of Pre Grant Publications for class 178 subclass 2C][List of Patents for class 178 subclass 2C]2C Subclass 2C indent level is 1 Way stations; party lines
 [List of Pre Grant Publications for class 178 subclass 2D][List of Patents for class 178 subclass 2D]2D Subclass 2D indent level is 1 Round robins
 [List of Pre Grant Publications for class 178 subclass 2E][List of Patents for class 178 subclass 2E]2E Subclass 2E indent level is 1 Satellite
 [List of Pre Grant Publications for class 178 subclass 2F][List of Patents for class 178 subclass 2F]2F Subclass 2F indent level is 1 Coin-controlled, connecting, recording
[List of Pre Grant Publications for class 178 subclass 70R][List of Patents for class 178 subclass 70R]  70R REPEATERS
[List of Pre Grant Publications for class 178 subclass 71.1][List of Patents for class 178 subclass 71.1]71.1 Subclass 71.1 indent level is 1 Automatic in either direction
 [List of Pre Grant Publications for class 178 subclass 72][List of Patents for class 178 subclass 72]72 Subclass 72 indent level is 2 Mechanical circuit retainer
 [List of Pre Grant Publications for class 178 subclass 73][List of Patents for class 178 subclass 73]73 Subclass 73 indent level is 2 Multiple line
 [List of Pre Grant Publications for class 178 subclass 71.2][List of Patents for class 178 subclass 71.2]71.2 Subclass 71.2 indent level is 2 Distributor
 [List of Pre Grant Publications for class 178 subclass 71.3][List of Patents for class 178 subclass 71.3]71.3 Subclass 71.3 indent level is 2 Mechanical
 [List of Pre Grant Publications for class 178 subclass 71.4][List of Patents for class 178 subclass 71.4]71.4 Subclass 71.4 indent level is 2 Generator
 [List of Pre Grant Publications for class 178 subclass 71.5][List of Patents for class 178 subclass 71.5]71.5 Subclass 71.5 indent level is 2 Artificial line and relay
 [List of Pre Grant Publications for class 178 subclass 71.6][List of Patents for class 178 subclass 71.6]71.6 Subclass 71.6 indent level is 2 Vacuum tube and gas magnetron
 [List of Pre Grant Publications for class 178 subclass 71.7][List of Patents for class 178 subclass 71.7]71.7 Subclass 71.7 indent level is 2 Code transformer
 [List of Pre Grant Publications for class 178 subclass 71.8][List of Patents for class 178 subclass 71.8]71.8 Subclass 71.8 indent level is 2 Oscillatory
 [List of Pre Grant Publications for class 178 subclass 71.9][List of Patents for class 178 subclass 71.9]71.9 Subclass 71.9 indent level is 2 One-way repeater switched
 [List of Pre Grant Publications for class 178 subclass 71.11][List of Patents for class 178 subclass 71.11]71.11 Subclass 71.11 indent level is 2 Piezoelectric
 [List of Pre Grant Publications for class 178 subclass 71.12][List of Patents for class 178 subclass 71.12]71.12 Subclass 71.12 indent level is 2 Vacuum tube and relay
 [List of Pre Grant Publications for class 178 subclass 71.13][List of Patents for class 178 subclass 71.13]71.13 Subclass 71.13 indent level is 2 Relay only
 [List of Pre Grant Publications for class 178 subclass 71.14][List of Patents for class 178 subclass 71.14]71.14 Subclass 71.14 indent level is 2 Supervisory, alarm, monitor
 [List of Pre Grant Publications for class 178 subclass 70A][List of Patents for class 178 subclass 70A]70A Subclass 70A indent level is 1 Relays only
 [List of Pre Grant Publications for class 178 subclass 70B][List of Patents for class 178 subclass 70B]70B Subclass 70B indent level is 1 Vibrating relays
 [List of Pre Grant Publications for class 178 subclass 70C][List of Patents for class 178 subclass 70C]70C Subclass 70C indent level is 1 Rotary distributors
 [List of Pre Grant Publications for class 178 subclass 70D][List of Patents for class 178 subclass 70D]70D Subclass 70D indent level is 1 Mechanical
 [List of Pre Grant Publications for class 178 subclass 70E][List of Patents for class 178 subclass 70E]70E Subclass 70E indent level is 1 Tuning forks
[List of Pre Grant Publications for class 178 subclass 70F][List of Patents for class 178 subclass 70F]70F Subclass 70F indent level is 1 Vacuum tubes
 [List of Pre Grant Publications for class 178 subclass 70G][List of Patents for class 178 subclass 70G]70G Subclass 70G indent level is 2 With rotary distributors
[List of Pre Grant Publications for class 178 subclass 70H][List of Patents for class 178 subclass 70H]70H Subclass 70H indent level is 1 Gas tubes
 [List of Pre Grant Publications for class 178 subclass 70K][List of Patents for class 178 subclass 70K]70K Subclass 70K indent level is 2 And distributors
 [List of Pre Grant Publications for class 178 subclass 70M][List of Patents for class 178 subclass 70M]70M Subclass 70M indent level is 1 Magnetic
 [List of Pre Grant Publications for class 178 subclass 70N][List of Patents for class 178 subclass 70N]70N Subclass 70N indent level is 1 Magnetron repeaters
 [List of Pre Grant Publications for class 178 subclass 70P][List of Patents for class 178 subclass 70P]70P Subclass 70P indent level is 1 Photocell
 [List of Pre Grant Publications for class 178 subclass 70Q][List of Patents for class 178 subclass 70Q]70Q Subclass 70Q indent level is 1 Piezoelectric
 [List of Pre Grant Publications for class 178 subclass 70J][List of Patents for class 178 subclass 70J]70J Subclass 70J indent level is 1 Generator
 [List of Pre Grant Publications for class 178 subclass 70S][List of Patents for class 178 subclass 70S]70S Subclass 70S indent level is 1 Having a carrier wave input
 [List of Pre Grant Publications for class 178 subclass 70T][List of Patents for class 178 subclass 70T]70T Subclass 70T indent level is 1 Oscillatory
 [List of Pre Grant Publications for class 178 subclass 70TS][List of Patents for class 178 subclass 70TS]70TS Subclass 70TS indent level is 1 Using transistors
[List of Pre Grant Publications for class 178 subclass 74][List of Patents for class 178 subclass 74]74 CIRCUITS
 [List of Pre Grant Publications for class 178 subclass 75][List of Patents for class 178 subclass 75]75 Subclass 75 indent level is 1 Manipulating switch
 [List of Pre Grant Publications for class 178 subclass 76][List of Patents for class 178 subclass 76]76 Subclass 76 indent level is 1 Retarded closer
[List of Pre Grant Publications for class 178 subclass 77][List of Patents for class 178 subclass 77]77 COMBINED INSTRUMENTS
 [List of Pre Grant Publications for class 178 subclass 78][List of Patents for class 178 subclass 78]78 Subclass 78 indent level is 1 Portable sets
[List of Pre Grant Publications for class 178 subclass 79][List of Patents for class 178 subclass 79]79 CODE TRANSMITTERS
[List of Pre Grant Publications for class 178 subclass 80][List of Patents for class 178 subclass 80]80 Subclass 80 indent level is 1 Combined instruments
 [List of Pre Grant Publications for class 178 subclass 81][List of Patents for class 178 subclass 81]81 Subclass 81 indent level is 2 With typewriter
[List of Pre Grant Publications for class 178 subclass 82R][List of Patents for class 178 subclass 82R]  82R Subclass 82R indent level is 1 Automatic dot
 [List of Pre Grant Publications for class 178 subclass 82B][List of Patents for class 178 subclass 82B]82B Subclass 82B indent level is 2 With electromagnet
 [List of Pre Grant Publications for class 178 subclass 82A][List of Patents for class 178 subclass 82A]82A Subclass 82A indent level is 2 And dash
[List of Pre Grant Publications for class 178 subclass 83][List of Patents for class 178 subclass 83]83 Subclass 83 indent level is 1 Rotary contact
 [List of Pre Grant Publications for class 178 subclass 84][List of Patents for class 178 subclass 84]84 Subclass 84 indent level is 2 Drum
 [List of Pre Grant Publications for class 178 subclass 85][List of Patents for class 178 subclass 85]85 Subclass 85 indent level is 1 Oscillating contact
 [List of Pre Grant Publications for class 178 subclass 86][List of Patents for class 178 subclass 86]86 Subclass 86 indent level is 1 Reciprocating contact
[List of Pre Grant Publications for class 178 subclass 118][List of Patents for class 178 subclass 118]118 RECEIVERS
[List of Pre Grant Publications for class 178 subclass 89][List of Patents for class 178 subclass 89]89 Subclass 89 indent level is 1 Code recorders
 [List of Pre Grant Publications for class 178 subclass 90][List of Patents for class 178 subclass 90]90 Subclass 90 indent level is 2 Photographic
 [List of Pre Grant Publications for class 178 subclass 91][List of Patents for class 178 subclass 91]91 Subclass 91 indent level is 2 Siphon
 [List of Pre Grant Publications for class 178 subclass 92][List of Patents for class 178 subclass 92]92 Subclass 92 indent level is 2 Indenting or perforating
 [List of Pre Grant Publications for class 178 subclass 93][List of Patents for class 178 subclass 93]93 Subclass 93 indent level is 2 Polarized
 [List of Pre Grant Publications for class 178 subclass 94][List of Patents for class 178 subclass 94]94 Subclass 94 indent level is 2 Pyrographic
 [List of Pre Grant Publications for class 178 subclass 95][List of Patents for class 178 subclass 95]95 Subclass 95 indent level is 2 Stop mechanisms
 [List of Pre Grant Publications for class 178 subclass 96][List of Patents for class 178 subclass 96]96 Subclass 96 indent level is 2 Inking devices
 [List of Pre Grant Publications for class 178 subclass 97][List of Patents for class 178 subclass 97]97 Subclass 97 indent level is 2 Double-tape movement
[List of Pre Grant Publications for class 178 subclass 98][List of Patents for class 178 subclass 98]98 Subclass 98 indent level is 1 Sounders
 [List of Pre Grant Publications for class 178 subclass 99.1][List of Patents for class 178 subclass 99.1]99.1 Subclass 99.1 indent level is 2 Private (e.g., acoustically shielded)
 [List of Pre Grant Publications for class 178 subclass 100][List of Patents for class 178 subclass 100]100 Subclass 100 indent level is 2 Augmenting
 [List of Pre Grant Publications for class 178 subclass 119][List of Patents for class 178 subclass 119]119 Subclass 119 indent level is 1 Optical member
 [List of Pre Grant Publications for class 178 subclass 120][List of Patents for class 178 subclass 120]120 Subclass 120 indent level is 1 With electron tube or solid-state device
[List of Pre Grant Publications for class 178 subclass 101][List of Patents for class 178 subclass 101]101 KEYS
 [List of Pre Grant Publications for class 178 subclass 102][List of Patents for class 178 subclass 102]102 Subclass 102 indent level is 1 Multiple contact
 [List of Pre Grant Publications for class 178 subclass 103][List of Patents for class 178 subclass 103]103 Subclass 103 indent level is 1 Multiple line
 [List of Pre Grant Publications for class 178 subclass 104][List of Patents for class 178 subclass 104]104 Subclass 104 indent level is 1 Self-closing
 [List of Pre Grant Publications for class 178 subclass 105][List of Patents for class 178 subclass 105]105 Subclass 105 indent level is 1 Reversible
 [List of Pre Grant Publications for class 178 subclass 106][List of Patents for class 178 subclass 106]106 Subclass 106 indent level is 1 Shifting contact point
 [List of Pre Grant Publications for class 178 subclass 107][List of Patents for class 178 subclass 107]107 Subclass 107 indent level is 1 Knife-edge pivot
 [List of Pre Grant Publications for class 178 subclass 108][List of Patents for class 178 subclass 108]108 Subclass 108 indent level is 1 Horizontal swing
 [List of Pre Grant Publications for class 178 subclass 109][List of Patents for class 178 subclass 109]109 Subclass 109 indent level is 1 Spring pivot
 [List of Pre Grant Publications for class 178 subclass 110][List of Patents for class 178 subclass 110]110 Subclass 110 indent level is 1 Finger buttons
[List of Pre Grant Publications for class 178 subclass 111][List of Patents for class 178 subclass 111]111 TAPES
 [List of Pre Grant Publications for class 178 subclass 112][List of Patents for class 178 subclass 112]112 Subclass 112 indent level is 1 Perforated
 [List of Pre Grant Publications for class 178 subclass 114][List of Patents for class 178 subclass 114]114 INSTRUMENT TABLES
 [List of Pre Grant Publications for class 178 subclass 115][List of Patents for class 178 subclass 115]115 LEARNERS' INSTRUMENTS
 
FOREIGN ART COLLECTIONS
 
      FOR000          CLASS-RELATED FOREIGN DOCUMENTS
Any foreign patents or non-patent literature from subclasses that have been reclassified have been transferred directly to FOR Collections listed below. These Collections contain ONLY foreign patents or non-patent literature. The parenthetical references in the Collection titles refer to the abolished subclasses from which these Collections were derived.
     SYSTEMS
  FOR100          Subclass FOR100 indent level is 1 Writing (178/18)
      FOR101          Subclass FOR101 indent level is 2 Alternating current (178/19)
      FOR102          Subclass FOR102 indent level is 2 Variable direct current (178/20)
      FOR103          Subclass FOR103 indent level is 1 Stylus and tablet (178/87)

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