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Class   172EARTH WORKING
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 [List of Pre Grant Publications for class 172 subclass 1][List of Patents for class 172 subclass 1]1 PROCESSES
[List of Pre Grant Publications for class 172 subclass 2][List of Patents for class 172 subclass 2]2 AUTOMATIC POWER CONTROL
 [List of Pre Grant Publications for class 172 subclass 3][List of Patents for class 172 subclass 3]3 Subclass 3 indent level is 1 Motive power control
 [List of Pre Grant Publications for class 172 subclass 4][List of Patents for class 172 subclass 4]4 Subclass 4 indent level is 1 Constant depth type
 [List of Pre Grant Publications for class 172 subclass 4.5][List of Patents for class 172 subclass 4.5]4.5 Subclass 4.5 indent level is 1 Land leveller type
[List of Pre Grant Publications for class 172 subclass 5][List of Patents for class 172 subclass 5]5 Subclass 5 indent level is 1 Obstruction sensing type (includes plant sensing)
 [List of Pre Grant Publications for class 172 subclass 6][List of Patents for class 172 subclass 6]6 Subclass 6 indent level is 2 Electrical
[List of Pre Grant Publications for class 172 subclass 7][List of Patents for class 172 subclass 7]7 Subclass 7 indent level is 1 Draft responsive
 [List of Pre Grant Publications for class 172 subclass 8][List of Patents for class 172 subclass 8]8 Subclass 8 indent level is 2 Variable rate responsive
 [List of Pre Grant Publications for class 172 subclass 9][List of Patents for class 172 subclass 9]9 Subclass 9 indent level is 2 With manual actuator to select type of condition sensed
 [List of Pre Grant Publications for class 172 subclass 10][List of Patents for class 172 subclass 10]10 Subclass 10 indent level is 2 Sensitivity adjustment
 [List of Pre Grant Publications for class 172 subclass 11][List of Patents for class 172 subclass 11]11 Subclass 11 indent level is 2 With excess draft release
 [List of Pre Grant Publications for class 172 subclass 12][List of Patents for class 172 subclass 12]12 Subclass 12 indent level is 2 Overload lift type
[List of Pre Grant Publications for class 172 subclass 13][List of Patents for class 172 subclass 13]13 LAWN EDGER
 [List of Pre Grant Publications for class 172 subclass 14][List of Patents for class 172 subclass 14]14 Subclass 14 indent level is 1 With or convertible to non-earth working implement
[List of Pre Grant Publications for class 172 subclass 15][List of Patents for class 172 subclass 15]15 Subclass 15 indent level is 1 Rolling or driven cutter
 [List of Pre Grant Publications for class 172 subclass 16][List of Patents for class 172 subclass 16]16 Subclass 16 indent level is 2 With fixed cutter or furrower
 [List of Pre Grant Publications for class 172 subclass 17][List of Patents for class 172 subclass 17]17 Subclass 17 indent level is 1 With wheel or roller
 [List of Pre Grant Publications for class 172 subclass 18][List of Patents for class 172 subclass 18]18 Subclass 18 indent level is 1 Impact or grapple
[List of Pre Grant Publications for class 172 subclass 19][List of Patents for class 172 subclass 19]19 SOD CUTTER
 [List of Pre Grant Publications for class 172 subclass 20][List of Patents for class 172 subclass 20]20 Subclass 20 indent level is 1 With means for vertical transverse cutting while moving
[List of Pre Grant Publications for class 172 subclass 21][List of Patents for class 172 subclass 21]21 LAWN AERATOR OR PERFORATOR, OR PLUG REMOVER
 [List of Pre Grant Publications for class 172 subclass 22][List of Patents for class 172 subclass 22]22 Subclass 22 indent level is 1 Earth removing
[List of Pre Grant Publications for class 172 subclass 23][List of Patents for class 172 subclass 23]23 DRIVEN FROM OR GUIDED BY STATIONARY OBJECT, OR ANCHORED
 [List of Pre Grant Publications for class 172 subclass 24][List of Patents for class 172 subclass 24]24 Subclass 24 indent level is 1 Around tree or stake
 [List of Pre Grant Publications for class 172 subclass 25][List of Patents for class 172 subclass 25]25 Subclass 25 indent level is 1 Rotatable about vertical axis
 [List of Pre Grant Publications for class 172 subclass 26][List of Patents for class 172 subclass 26]26 Subclass 26 indent level is 1 Guided by surface track or previously formed shoulder
[List of Pre Grant Publications for class 172 subclass 26.5][List of Patents for class 172 subclass 26.5]26.5 Subclass 26.5 indent level is 1 Dragline scraper
 [List of Pre Grant Publications for class 172 subclass 26.6][List of Patents for class 172 subclass 26.6]26.6 Subclass 26.6 indent level is 2 Scraper part rearranged upon reverse movement
[List of Pre Grant Publications for class 172 subclass 27][List of Patents for class 172 subclass 27]27 WITH MEANS FOR CUTTING OR SHREDDING PLANTS WITHOUT SOIL DISTURBANCE
 [List of Pre Grant Publications for class 172 subclass 28][List of Patents for class 172 subclass 28]28 Subclass 28 indent level is 1 Driven
[List of Pre Grant Publications for class 172 subclass 29][List of Patents for class 172 subclass 29]29 WITH MEANS FOR SHIFTING SURFACE MATERIAL WITHOUT SOIL DISTURBANCE
 [List of Pre Grant Publications for class 172 subclass 30][List of Patents for class 172 subclass 30]30 Subclass 30 indent level is 1 Driven shifting means
 [List of Pre Grant Publications for class 172 subclass 31][List of Patents for class 172 subclass 31]31 Subclass 31 indent level is 1 Combined with rolling or vertically acting transverse cutter
 [List of Pre Grant Publications for class 172 subclass 32][List of Patents for class 172 subclass 32]32 WITH SEPARATING AFTER EARTH WORKING
 [List of Pre Grant Publications for class 172 subclass 33][List of Patents for class 172 subclass 33]33 WITH POWER DRIVEN MOLDBOARD, CONVEYER OR HANDLER
 [List of Pre Grant Publications for class 172 subclass 34][List of Patents for class 172 subclass 34]34 COMPLETE APPARATUS ADAPTED FOR USE UPSIDE DOWN
[List of Pre Grant Publications for class 172 subclass 35][List of Patents for class 172 subclass 35]35 WITH DRIVE MEANS FOR TOOL OR CLEANER
 [List of Pre Grant Publications for class 172 subclass 36][List of Patents for class 172 subclass 36]36 Subclass 36 indent level is 1 Subsurface shears or nippers
 [List of Pre Grant Publications for class 172 subclass 37][List of Patents for class 172 subclass 37]37 Subclass 37 indent level is 1 Tool rotated by attendant
 [List of Pre Grant Publications for class 172 subclass 38][List of Patents for class 172 subclass 38]38 Subclass 38 indent level is 1 With obstruction feeling device for moving or releasing implement
 [List of Pre Grant Publications for class 172 subclass 39][List of Patents for class 172 subclass 39]39 Subclass 39 indent level is 1 With cleaner or comminutor spaced from ground surface
 [List of Pre Grant Publications for class 172 subclass 40][List of Patents for class 172 subclass 40]40 Subclass 40 indent level is 1 Vibrating tool
 [List of Pre Grant Publications for class 172 subclass 41][List of Patents for class 172 subclass 41]41 Subclass 41 indent level is 1 Attendant supported tool
[List of Pre Grant Publications for class 172 subclass 42][List of Patents for class 172 subclass 42]42 Subclass 42 indent level is 1 Guided by walking attendant
 [List of Pre Grant Publications for class 172 subclass 43][List of Patents for class 172 subclass 43]43 Subclass 43 indent level is 2 With ground support vertically adjustable relative to frame
 [List of Pre Grant Publications for class 172 subclass 44][List of Patents for class 172 subclass 44]44 Subclass 44 indent level is 1 Subsurface shaft or bar (e.g., rod weeder)
 [List of Pre Grant Publications for class 172 subclass 45][List of Patents for class 172 subclass 45]45 Subclass 45 indent level is 1 Flails
 [List of Pre Grant Publications for class 172 subclass 46][List of Patents for class 172 subclass 46]46 Subclass 46 indent level is 1 Coaxial tools oppositely rotated
 [List of Pre Grant Publications for class 172 subclass 47][List of Patents for class 172 subclass 47]47 Subclass 47 indent level is 1 With specific relationship of mast-type hitch (i.e., three-point hitch) to implement
[List of Pre Grant Publications for class 172 subclass 48][List of Patents for class 172 subclass 48]48 Subclass 48 indent level is 1 Plural driven tools
[List of Pre Grant Publications for class 172 subclass 49][List of Patents for class 172 subclass 49]49 Subclass 49 indent level is 2 Contiguous cooperating or intermeshing rotary ground engaging tools
[List of Pre Grant Publications for class 172 subclass 50][List of Patents for class 172 subclass 50]50 Subclass 50 indent level is 2 Diverse tools
 [List of Pre Grant Publications for class 172 subclass 54.5][List of Patents for class 172 subclass 54.5]54.5 Subclass 54.5 indent level is 2 Tool reciprocates or oscillates within a generally horizontal plane
 [List of Pre Grant Publications for class 172 subclass 55][List of Patents for class 172 subclass 55]55 Subclass 55 indent level is 2 Plural groups of disks
 [List of Pre Grant Publications for class 172 subclass 56][List of Patents for class 172 subclass 56]56 Subclass 56 indent level is 2 Staggered tools
[List of Pre Grant Publications for class 172 subclass 57][List of Patents for class 172 subclass 57]57 Subclass 57 indent level is 2 Laterally spaced tools
[List of Pre Grant Publications for class 172 subclass 61][List of Patents for class 172 subclass 61]61 Subclass 61 indent level is 1 Intermittent drive for tool
 [List of Pre Grant Publications for class 172 subclass 62][List of Patents for class 172 subclass 62]62 Subclass 62 indent level is 2 With spring return
[List of Pre Grant Publications for class 172 subclass 63][List of Patents for class 172 subclass 63]63 Subclass 63 indent level is 1 With non-driven tool (e.g., plow, harrow, drag, scraper, knife or roll, etc.)
 [List of Pre Grant Publications for class 172 subclass 64][List of Patents for class 172 subclass 64]64 Subclass 64 indent level is 2 Non-driven furrow opener and driven dam former
 [List of Pre Grant Publications for class 172 subclass 65][List of Patents for class 172 subclass 65]65 Subclass 65 indent level is 2 Interdigitating non-driven and driven tools
 [List of Pre Grant Publications for class 172 subclass 66][List of Patents for class 172 subclass 66]66 Subclass 66 indent level is 2 Cooperating driven cleaner or comminutor and contiguous tool
 [List of Pre Grant Publications for class 172 subclass 67][List of Patents for class 172 subclass 67]67 Subclass 67 indent level is 2 Driven comminutor at outlet of earth guide
[List of Pre Grant Publications for class 172 subclass 68][List of Patents for class 172 subclass 68]68 Subclass 68 indent level is 2 Rolling tool
 [List of Pre Grant Publications for class 172 subclass 70][List of Patents for class 172 subclass 70]70 Subclass 70 indent level is 2 Fore-and-aft non-driven tool
[List of Pre Grant Publications for class 172 subclass 71][List of Patents for class 172 subclass 71]71 Subclass 71 indent level is 2 Non-driven tool follows path of driven tool
 [List of Pre Grant Publications for class 172 subclass 73][List of Patents for class 172 subclass 73]73 Subclass 73 indent level is 2 Staggered driven and non-driven tool (e.g., cotton chopper, etc.)
 [List of Pre Grant Publications for class 172 subclass 74][List of Patents for class 172 subclass 74]74 Subclass 74 indent level is 1 With power take-off from tool drive to adjust tool
 [List of Pre Grant Publications for class 172 subclass 75][List of Patents for class 172 subclass 75]75 Subclass 75 indent level is 1 Interconnected tool lift and drive control
[List of Pre Grant Publications for class 172 subclass 76][List of Patents for class 172 subclass 76]76 Subclass 76 indent level is 1 Implement with ground support for depth control
 [List of Pre Grant Publications for class 172 subclass 77][List of Patents for class 172 subclass 77]77 Subclass 77 indent level is 2 Vertically biased implement
 [List of Pre Grant Publications for class 172 subclass 78][List of Patents for class 172 subclass 78]78 Subclass 78 indent level is 2 Vertically adjustable ground support
 [List of Pre Grant Publications for class 172 subclass 79][List of Patents for class 172 subclass 79]79 Subclass 79 indent level is 2 Tool driven from prime mover on vehicle
 [List of Pre Grant Publications for class 172 subclass 80][List of Patents for class 172 subclass 80]80 Subclass 80 indent level is 1 With wheel substitute (e.g., runner, etc.)
 [List of Pre Grant Publications for class 172 subclass 81][List of Patents for class 172 subclass 81]81 Subclass 81 indent level is 1 With plant deflector or protector
[List of Pre Grant Publications for class 172 subclass 82][List of Patents for class 172 subclass 82]82 Subclass 82 indent level is 1 Driven tool selectively shiftable along line of travel
 [List of Pre Grant Publications for class 172 subclass 83][List of Patents for class 172 subclass 83]83 Subclass 83 indent level is 2 Tool drive interrupted by shifting tool
[List of Pre Grant Publications for class 172 subclass 84][List of Patents for class 172 subclass 84]84 Subclass 84 indent level is 1 Simultaneously reciprocating and oscillating blade having elongated shank
[List of Pre Grant Publications for class 172 subclass 85][List of Patents for class 172 subclass 85]85 Subclass 85 indent level is 2 Transverse chopping type
 [List of Pre Grant Publications for class 172 subclass 88][List of Patents for class 172 subclass 88]88 Subclass 88 indent level is 2 With plural cranks or cams driving each blade
 [List of Pre Grant Publications for class 172 subclass 89][List of Patents for class 172 subclass 89]89 Subclass 89 indent level is 2 Means for varying contour of path of blade
 [List of Pre Grant Publications for class 172 subclass 90][List of Patents for class 172 subclass 90]90 Subclass 90 indent level is 1 Irregular or off-center ground-engaging wheel or support
[List of Pre Grant Publications for class 172 subclass 91][List of Patents for class 172 subclass 91]91 Subclass 91 indent level is 1 Blade movable with respect to cyclically driven carrier
[List of Pre Grant Publications for class 172 subclass 92][List of Patents for class 172 subclass 92]92 Subclass 92 indent level is 2 With means for moving blade
 [List of Pre Grant Publications for class 172 subclass 96][List of Patents for class 172 subclass 96]96 Subclass 96 indent level is 2 Blade flexible or with yieldable mount on carrier
 [List of Pre Grant Publications for class 172 subclass 97][List of Patents for class 172 subclass 97]97 Subclass 97 indent level is 1 Compound motion for tool (e.g., reciprocating and oscillating, reciprocating and rotating)
[List of Pre Grant Publications for class 172 subclass 98][List of Patents for class 172 subclass 98]98 Subclass 98 indent level is 1 Tool mounted for lateral shifting
 [List of Pre Grant Publications for class 172 subclass 99][List of Patents for class 172 subclass 99]99 Subclass 99 indent level is 2 About generally vertical axis
 [List of Pre Grant Publications for class 172 subclass 100][List of Patents for class 172 subclass 100]100 Subclass 100 indent level is 1 Blade on endless driven belt or chain
[List of Pre Grant Publications for class 172 subclass 101][List of Patents for class 172 subclass 101]101 Subclass 101 indent level is 1 Tool guided for rectilinear reciprocation
 [List of Pre Grant Publications for class 172 subclass 102][List of Patents for class 172 subclass 102]102 Subclass 102 indent level is 2 Tool moves in horizontal, transverse path
[List of Pre Grant Publications for class 172 subclass 103][List of Patents for class 172 subclass 103]103 Subclass 103 indent level is 1 With overload relief or clutch in drive train (e.g., overload release, etc.)
 [List of Pre Grant Publications for class 172 subclass 104][List of Patents for class 172 subclass 104]104 Subclass 104 indent level is 2 Unidirectional clutch in drive from ground wheel
[List of Pre Grant Publications for class 172 subclass 105][List of Patents for class 172 subclass 105]105 Subclass 105 indent level is 1 Driven from rolling or driven ground wheel
 [List of Pre Grant Publications for class 172 subclass 106][List of Patents for class 172 subclass 106]106 Subclass 106 indent level is 2 Belt or chain drive
[List of Pre Grant Publications for class 172 subclass 107][List of Patents for class 172 subclass 107]107 Subclass 107 indent level is 1 Tool driven about horizontal, longitudinal axis
[List of Pre Grant Publications for class 172 subclass 108][List of Patents for class 172 subclass 108]108 Subclass 108 indent level is 2 Rotary driven tool
[List of Pre Grant Publications for class 172 subclass 110][List of Patents for class 172 subclass 110]110 Subclass 110 indent level is 1 Tool driven about generally vertical axis (e.g., oscillating choppers, etc.)
 [List of Pre Grant Publications for class 172 subclass 111][List of Patents for class 172 subclass 111]111 Subclass 111 indent level is 2 Rotary driven tool
[List of Pre Grant Publications for class 172 subclass 112][List of Patents for class 172 subclass 112]112 Subclass 112 indent level is 1 With deflector or shield for thrown material
 [List of Pre Grant Publications for class 172 subclass 113][List of Patents for class 172 subclass 113]113 Subclass 113 indent level is 2 Laterally directed outlet flow
[List of Pre Grant Publications for class 172 subclass 114][List of Patents for class 172 subclass 114]114 Subclass 114 indent level is 1 Specific propelling means
 [List of Pre Grant Publications for class 172 subclass 115][List of Patents for class 172 subclass 115]115 Subclass 115 indent level is 2 Tool steers implement
 [List of Pre Grant Publications for class 172 subclass 116][List of Patents for class 172 subclass 116]116 Subclass 116 indent level is 2 Tool propels implement
 [List of Pre Grant Publications for class 172 subclass 117][List of Patents for class 172 subclass 117]117