| Patents for A01B 13 - Ploughs or like machines for special purposes (1,205) |
|---|
| 12/04/1990 | US4974681 Method for fracturing sub-surface hardpan by drawing a particularly-angled tine therethrough |
| 11/07/1990 | EP0395651A1 Tussock-forming forest cultivator |
| 08/29/1990 | CN2060962U Tillage machinery with water storage, collecting fertilizer, improving soil function |
| 08/01/1990 | EP0289517B1 Process and device for loosening soil |
| 08/01/1990 | CN2059786U Tiller for high yield furrows with water-storing and fertilizer-gathering features |
| 07/12/1990 | DE3900288A1 Mounted paring plough for vineyard tractors |
| 07/03/1990 | CA1271079A1 Device for adjusting the distance between soil working tools |
| 06/13/1990 | CN1008318B Ridge forming machine |
| 06/05/1990 | CA1269893A1 Ridge tillage attachment for planters |
| 05/16/1990 | EP0157337B1 Soil loosening implement |
| 05/15/1990 | US4924946 Apparatus for deep plowing highly compacted soil |
| 04/19/1990 | WO1990003722A1 Tyne assembly and tyne |
| 04/04/1990 | CN1007404B Ridging machine |
| 03/21/1990 | CN2054612U Retractable apparatus of oscillating coulter plate |
| 02/27/1990 | US4903782 For rice farming |
| 01/30/1990 | US4896443 Ditch forming apparatus |
| 01/23/1990 | US4895211 Land clearing root plow and soil aerator |
| 01/17/1990 | CN1006441B Device for adjusting the distance between soil working tools |
| 01/16/1990 | US4893682 Rotating flexible implement for soil erosion control |
| 11/30/1989 | WO1989011214A1 A direct-connected, reversible, single-bottom plough with subsoilers, provided with a differential surface-ploughing device allowing surface soil to be put into the furrow at programmable intervals, and with reversible sowing members |
| 10/18/1989 | CN1005447B Ploughing device and its method |
| 10/11/1989 | CN2045568U Loosening ridging machine |
| 09/19/1989 | US4867247 Bedding plow |
| 09/12/1989 | US4865132 Tillage implement having independent depth control mechanism |
| 09/06/1989 | CN2043817U Working tractor with rear ditching device |
| 09/06/1989 | CN1035222A Earth covering machine for preventing seedlings from cold |
| 08/15/1989 | US4856597 Soil working machine |
| 07/25/1989 | US4850434 Vibrating deep ripper |
| 07/11/1989 | CA1257089A1 Self-tripping rippers |
| 06/14/1989 | CN2039097U Cultivator being able to lift vertically |
| 06/08/1989 | DE3740081A1 Subsoil loosener for loosening compacted soils |
| 05/09/1989 | US4828043 Device for adjusting the distance between soil-working tools |
| 04/25/1989 | US4823884 Plow cleaning device |
| 03/28/1989 | US4815545 Subsoil blade ploughs |
| 03/23/1989 | WO1989002214A1 Tussock-forming forest cultivator |
| 03/09/1989 | DE3827170A1 Process for the homogenisation and improvement in fertility of agricultural soils by mechanical working and apparatus for carrying out the process |
| 02/01/1989 | CN2031596U Tooth-winged ridge forming ploughshare |
| 01/24/1989 | US4799823 Plow with readily replaceable wear parts especially adapted for use in a vibratory cable laying machine |
| 12/22/1988 | DE3718381A1 Plough |
| 11/22/1988 | US4785891 Tilling ridger |
| 11/01/1988 | CA1243882A1 Subsoil tillage machine |
| 10/12/1988 | EP0286096A1 Implement for working agriculturally used soils |
| 10/04/1988 | US4774898 Air injection system for a cultivator |
| 09/28/1988 | CN87212384U Rear digging machine of walking tractor |
| 09/21/1988 | CN87201565U Hanging type chisel plough for working subsoil |
| 09/14/1988 | CN87203399U Awl shape moldboard plow |
| 08/23/1988 | US4765261 Fluid injection cultivator |
| 08/02/1988 | US4760804 Air injection cultivator |
| 06/07/1988 | US4749048 Ripper attachment for skid steer loaders |
| 04/20/1988 | CN87213472U Vertical cone type spiral channeller |
| 03/24/1988 | WO1988001830A1 Method and tool for the treatment of roots below the ground |
| 03/15/1988 | CA1234010A1 Vibrating earth ripping apparatus |
| 03/08/1988 | US4729435 Subsoil tilling implement |
| 02/23/1988 | US4726428 Agricultural tillage unit |
| 12/30/1987 | CN86104045A Ploughing device and its method |
| 12/23/1987 | CN86202231U High yield ditch plough drawed by domestic animals and small power device |
| 12/03/1987 | DE3618064A1 Plough |
| 11/26/1987 | DE3617394A1 Tractor-drawn rotating deep-ploughing plough for the elimination of radioactive precipitation |
| 10/27/1987 | US4702323 Ridge tillage attachment for planters |
| 10/13/1987 | US4699220 Deep tillage knife assembly |
| 10/07/1987 | CN87101941A Device for adjusting the distance between soil working tools |
| 10/06/1987 | CA1227683A1 Soil pitting and damming implement and process |
| 09/23/1987 | EP0238465A1 A device for adjusting the distance between soil working tools |
| 08/27/1987 | WO1987004893A1 Subsoil aerator |
| 07/14/1987 | US4679635 Self-tripping rippers |
| 07/02/1987 | WO1987003774A1 Process and device for loosening soil |
| 07/01/1987 | CN86202870U Path-raising plastic film-spreading machine without driving shaft |
| 06/25/1987 | DE3545970A1 Verfahren und vorrichtung zur auflockerung von boeden Method and device for loosen up of soils |
| 05/27/1987 | EP0222930A1 Subsoiler |
| 04/28/1987 | US4660480 Process and device for loosening agriculturally used soil |
| 04/28/1987 | CA1220982A1 Rotation control system for the mattock means of tuft building forest mattock |
| 04/21/1987 | US4658738 Apparatus and process for treating soil used for cultivation |
| 04/21/1987 | CA1220633A1 Stone digger |
| 03/17/1987 | US4650206 Locking hitch assembly |
| 02/26/1987 | DE3529551A1 Appliance for breaking up, turning over, fertilising and regenerating ground used for planting |
| 01/17/1987 | CN85102043A Ridging machine |
| 11/19/1986 | CN85103669A Ridge forming machine |
| 10/21/1986 | US4618004 Method and apparatus for building borders |
| 10/14/1986 | US4616715 Forest mattock with braked rotation system |
| 09/16/1986 | US4611668 Assembly for forming water retaining pockets and levelling the ground surface |
| 08/28/1986 | WO1986004771A1 Pitting implement |
| 07/01/1986 | US4597452 Disk grading terrace plow |
| 05/28/1986 | CN85201539U Tiller for high yield ditch (fengchan ditch) |
| 05/07/1986 | EP0180551A2 An agricultural machine for breaking and overturning the soil |
| 05/07/1986 | EP0180088A2 Method of breaking, cultivating, fertilising and reconstituting agricultural soil |
| 04/29/1986 | US4585074 For a cultivator |
| 01/07/1986 | CA1198891A1 Process and device for loosening agriculturally used soil |
| 12/24/1985 | US4560010 Soil layer cultivator with a pressure roller unit |
| 10/09/1985 | EP0157337A2 Soil loosening implement |
| 09/17/1985 | US4541491 Plow |
| 09/04/1985 | EP0153765A2 Combined machine for agricultural soil working |
| 06/25/1985 | US4524837 Soil conditioning and bed preparation apparatus |
| 04/02/1985 | US4508177 Soil pitting and damming implement and process |
| 03/26/1985 | US4506740 Vibrating earth ripping apparatus |
| 01/30/1985 | EP0132397A2 Soil working implement |
| 01/29/1985 | CA1181634A2 Agronomic process |
| 12/11/1984 | CA1179182A2 Agronomic implement |
| 11/27/1984 | US4484636 Levee plow with extensible linkage |
| 09/26/1984 | EP0023919B1 A grubber implement |
| 08/08/1984 | EP0115372A1 Ridging apparatus |