| Patents for A01G 23 - Forestry (6,442) | 
|---|
| 04/07/1981 | CA1098720A1 Suction pumping relay for sugar maple tree stands | 
| 03/31/1981 | US4258763 Cutting device having a flexible cutting element | 
| 03/31/1981 | US4258762 Apparatus for delimbing trees | 
| 03/24/1981 | US4258101 Conductive plastic with metalized glass fibers retained in partial clumps | 
| 03/18/1981 | EP0025032A1 Tree accumulating apparatus. | 
| 03/17/1981 | CA1097562A1 Stump cutter | 
| 03/10/1981 | US4254874 Device for collecting and processing tree stumps | 
| 03/10/1981 | US4254807 Tree harvesting apparatus and method | 
| 03/03/1981 | USRE30533 Manually operated log breaking device | 
| 03/03/1981 | US4253536 Articulated, cross-country vehicle | 
| 03/03/1981 | CA1096637A1 No translation available | 
| 03/03/1981 | CA1096622A1 Fin-stabilized container of foldable sheet material | 
| 02/17/1981 | US4250769 Pivoted adjustable lever with grab link | 
| 02/17/1981 | US4250664 Wire basket | 
| 02/17/1981 | CA1095887A1 Wedge arrangement | 
| 02/10/1981 | US4249344 Tree ball grabber | 
| 01/21/1981 | EP0022733A1 Machine for extracting saplings | 
| 01/13/1981 | US4244560 Tree puller | 
| 01/13/1981 | US4244405 Tree shear head and controls therefor | 
| 01/06/1981 | US4243258 Tree harvester | 
| 01/06/1981 | CA1093024A1 Log skidder wth folding arch | 
| 12/23/1980 | US4240510 Combined scarifier and branch slashing and crushing implement | 
| 12/16/1980 | US4239067 Apparatus for bulk-lopping, bucking and prestacking in forest harvesting | 
| 12/16/1980 | CA1091449A1 Fluid suction device | 
| 12/09/1980 | CA1091218A1 Feeding roll | 
| 12/02/1980 | US4236554 Land clearing machine | 
| 12/02/1980 | CA1090681A1 Method and apparatus for processing trees | 
| 11/11/1980 | US4232719 Brush harvester | 
| 10/07/1980 | US4226270 Tree harvester | 
| 10/07/1980 | US4226033 Tree transplanting machine | 
| 09/30/1980 | US4224995 Device for removing palmetto bushes | 
| 09/18/1980 | WO1980001865A1 Tree harvester | 
| 09/16/1980 | US4222549 Apparatus for breaking wood | 
| 09/16/1980 | US4222420 Device for feeding logs | 
| 09/09/1980 | US4221245 Tree harvester with saw and shear | 
| 09/02/1980 | US4220184 Delimber | 
| 08/26/1980 | US4219059 Apparatus for harvesting and bunching trees | 
| 08/26/1980 | US4219058 Apparatus for converting a tree feller into a feller buncher | 
| 08/26/1980 | US4219057 Timber to firewood processing machine | 
| 08/26/1980 | CA1084277A1 Method and apparatus for stripping cones from confier trees | 
| 08/19/1980 | CA1083929A1 Land clearing machine | 
| 08/12/1980 | US4216940 Directional tree falling aid and method of applying same | 
| 08/05/1980 | CA1083016A1 Tree delimber and loader | 
| 07/29/1980 | US4214617 Stump cutter | 
| 07/29/1980 | US4214616 Tree delimbing apparatus | 
| 07/01/1980 | USRE30316 Lumbering tool | 
| 07/01/1980 | US4210183 Tree clamp and shear support structure | 
| 07/01/1980 | CA1080587A1 Traveling hose system | 
| 07/01/1980 | CA1080586A1 Tree harvester with saw and shear | 
| 07/01/1980 | CA1080584A1 Flailing machine for felled trees | 
| 07/01/1980 | CA1080553A1 Spot planter | 
| 06/24/1980 | CA1080089A1 Accumulator mechanism for tree harvesting apparatus | 
| 06/03/1980 | US4205712 Method and machine for harvesting and de-limbing trees | 
| 06/03/1980 | US4205485 Tray construction for growing plants | 
| 06/03/1980 | CA1078813A1 Fluid operated ram for felling trees | 
| 05/20/1980 | US4203253 Process for increasing oleoresin synthesis in pinus species | 
| 05/20/1980 | CA1077811A1 Debris separating chipper | 
| 05/20/1980 | CA1077810A1 Stump eradicator | 
| 05/20/1980 | CA1077732A1 Non-jamming shear pin assembly | 
| 05/06/1980 | CA1076804A1 Method for growing plants | 
| 04/29/1980 | US4200315 Drawbar for a trailer | 
| 04/29/1980 | CA1076549A1 Device for feeding logs | 
| 04/22/1980 | CA1076071A1 Skidding and bunching trailer | 
| 04/01/1980 | US4195440 Fluid suction device | 
| 03/25/1980 | US4194542 Device in an apparatus for processing trees | 
| 03/25/1980 | CA1074186A1 Method for sowing of forest seeds directly in the humus layer in the forest and a device for carrying out the method | 
| 03/18/1980 | CA1073784A1 Tree delimbing apparatus | 
| 03/04/1980 | CA1072824A1 High-speed planting method and machine | 
| 02/26/1980 | CA1072418A1 Energy saving tree harvester | 
| 02/26/1980 | CA1072417A1 Suspension device for felling unit | 
| 02/19/1980 | CA1071980A1 Tree shear actuator restraint system | 
| 02/05/1980 | US4186670 Method and apparatus for sowing forest seeds in the humus layer | 
| 02/05/1980 | CA1071182A1 Arrangement for adjusting the compression force of drive rolls | 
| 01/22/1980 | CA1070221A1 Device in an apparatus for processing trees | 
| 01/22/1980 | CA1070220A1 Forestry machines | 
| 01/15/1980 | CA1069880A1 Method and apparatus for use in connection with felling of trees | 
| 01/15/1980 | CA1069804A1 Tree shear actuator restraint system | 
| 01/15/1980 | CA1069803A1 Apparatus for sorting trees | 
| 01/01/1980 | CA1069028A Method and apparatus for sorting trees | 
| 12/25/1979 | US4180108 Removable mounted teeth in brush clearing saw | 
| 12/25/1979 | US4180107 Stump eradicator | 
| 12/25/1979 | US4179847 Root ball clamp | 
| 12/18/1979 | CA1068196A1 Mobile machine for processing trees and trunks | 
| 12/11/1979 | CA1067924A1 Four-wheel-drive articulated frame steering vehicle | 
| 12/04/1979 | CA1067290A1 Planting system including articles of manufacture | 
| 11/27/1979 | US4175598 Apparatus for felling and accumulating trees | 
| 11/27/1979 | CA1066993A1 Delimbing apparatus | 
| 11/27/1979 | CA1066954A1 Tree transplanting machine | 
| 11/20/1979 | USRE30153 Tree harvester | 
| 11/20/1979 | CA1066593A1 Roll limber head | 
| 11/15/1979 | WO1979000949A1 A machine for limbing trees and stems | 
| 11/14/1979 | EP0005354A1 Seedling transplanting machine | 
| 11/13/1979 | CA1066173A1 Holding arm | 
| 11/06/1979 | CA1065742A1 Tree severing apparatus and method | 
| 10/30/1979 | US4172479 Method and apparatus for use in connection with felling of trees | 
| 10/30/1979 | US4172478 Delimbing apparatus | 
| 10/23/1979 | US4171797 Winch arrangement | 
| 10/16/1979 | CA1064373A1 Rail-riding limber and topper | 
| 10/16/1979 | CA1064372A1 Apparatus for delimbing trees | 
| 10/02/1979 | CA1063488A1 Flywheel tree feller and buncher |