| Patents for A01B 31 - Drags (161) | |
|---|---|
| 11/2001 | |
| 11/21/2001 | EP1155197A1 Adjustable grating attachment for grading soil |
| 10/2001 | |
| 10/30/2001 | US6308785 Adjustable grader-spreader bar |
| 07/2001 | |
| 07/10/2001 | US6257342 Soil grading apparatus |
| 04/2001 | |
| 04/17/2001 | US6216796 Tractor rake attachment for light and medium grade soil work |
| 03/2001 | |
| 03/27/2001 | US6206106 High speed grader |
| 12/2000 | |
| 12/15/2000 | CA2275152A1 Land leveller |
| 11/2000 | |
| 11/29/2000 | CN1274519A Agricultural harrower |
| 08/2000 | |
| 08/24/2000 | WO2000049234A1 Adjustable grating attachment for grading soil |
| 08/24/2000 | CA2362966A1 Adjustable grating attachment for grading soil |
| 07/2000 | |
| 07/11/2000 | US6085848 Apparatus for laying a surface |
| 12/1999 | |
| 12/14/1999 | US6000476 Combined rock puller and land leveller |
| 11/1999 | |
| 11/23/1999 | US5988295 Adjustable grating attachment for grading soil |
| 07/1999 | |
| 07/13/1999 | US5921324 Device for clearing and seeding range land |
| 04/1999 | |
| 04/06/1999 | US5890546 Tractor drawn scraper with folding wings |
| 02/1999 | |
| 02/19/1999 | CA2213360A1 Road leveller |
| 10/1998 | |
| 10/16/1998 | CA2202847A1 Combined rock puller and land leveller |
| 08/1998 | |
| 08/18/1998 | US5794714 Dirt leveling device |
| 06/1998 | |
| 06/30/1998 | US5771980 Soil leveling apparatus with improved frame and hitch |
| 06/23/1998 | US5769171 Dirt scraper having a hinged floor |
| 06/09/1998 | US5761894 Grass striping attachment for lawn mowers |
| 12/1997 | |
| 12/23/1997 | US5699863 Apparatus for grooming fields |
| 07/1996 | |
| 07/18/1996 | WO1996021775A1 Levelling assembly |
| 04/1996 | |
| 04/30/1996 | US5511625 Soil leveling apparatus with improved frame and hitch |
| 11/1995 | |
| 11/07/1995 | US5464066 Method and a machine for repairing a ground area planted with grass for example a turfed racecourse or equestrian training ground |
| 04/1995 | |
| 04/18/1995 | US5407014 Gravel scarifying device |
| 12/1994 | |
| 12/13/1994 | US5372205 Furrow covering hoe for one handed operation |
| 10/1993 | |
| 10/10/1993 | CA2065701A1 Gravel scarifying and levelling device |
| 09/1993 | |
| 09/15/1993 | EP0560655A1 Method and machine for the maintenance of a grass-covered area, such as a race track or a training ground for horses |
| 05/1993 | |
| 05/27/1993 | DE4138011A1 Device for levelling large surfaces - using pistons to raise and lower levelling board which are automatically controlled by guide wire and sensing devices which is centrally controlled |
| 05/25/1993 | US5213165 For leveling a field to be cultivated |
| 05/25/1993 | US5213164 Soil leveling apparatus with improved frame and hitch |
| 05/18/1993 | US5211247 Landscaping device |
| 04/1993 | |
| 04/14/1993 | CN1020246C Land levalling machine for both paddy dry fields |
| 03/1993 | |
| 03/09/1993 | US5191944 Device for dressing a lawn |
| 03/09/1993 | US5191943 Three-point hitch attached grader with adjustable blades |
| 10/1992 | |
| 10/07/1992 | CN2117701U Tractor drag used in paddy field |
| 12/1991 | |
| 12/31/1991 | US5075985 Offal scraper |
| 12/18/1991 | CN1056974A Land levelling machine for both paddy dry fields |
| 07/1991 | |
| 07/03/1991 | CN2079849U Prefix paddy fields harrow-like implement matched with walking tractor |
| 06/1991 | |
| 06/18/1991 | US5024280 Soil leveling apparatus with improved frame and hitch |
| 04/1991 | |
| 04/16/1991 | US5007485 Earth crust breaker |
| 01/1991 | |
| 01/30/1991 | CN2070081U Middle mounted paddy field drag matched with model 12 walking tractor |
| 05/1990 | |
| 05/15/1990 | US4924945 Soil leveling apparatus with improved scraper member |
| 03/1990 | |
| 03/14/1990 | CN2054253U Paddy field implement |
| 12/1989 | |
| 12/12/1989 | US4886124 Soil grading apparatus with sifting and transporting capability |
| 11/1989 | |
| 11/15/1989 | EP0342065A1 Implement for treating ploughed land |
| 07/1989 | |
| 07/25/1989 | US4850433 Landscape conditioning assembly |
| 04/1986 | |
| 04/29/1986 | US4585075 Soil leveling apparatus with improved frame and hitch |
| 12/1985 | |
| 12/17/1985 | US4558745 Machine for working soil having drivingly oscillated soil-working tool |
| 03/1985 | |
| 03/19/1985 | US4505338 Turf conditioning apparatus |
| 05/1984 | |
| 05/15/1984 | US4448258 Soil leveling apparatus |
| 06/1983 | |
| 06/07/1983 | US4386662 Leveler frame attached to an agricultural tractor |
| 05/1983 | |
| 05/04/1983 | EP0077850A1 Soil-working machine |
| 04/1982 | |
| 04/15/1982 | WO1982001114A1 Earth moving device,particularly for arrangements in public gardens or parks |
| 05/1981 | |
| 05/26/1981 | US4269273 Land surfacing apparatus |
| 04/1980 | |
| 04/08/1980 | US4196778 Particulate material spreader with selectively detachable three-point linkage |
| 12/1978 | |
| 12/19/1978 | CA1044504A1 Lightweight pasture harrow |
| 09/1977 | |
| 09/13/1977 | US4047574 Implement for levelling levees |
| 07/1977 | |
| 07/26/1977 | US4037669 Tine cultivator |
| 02/1977 | |
| 02/01/1977 | US4005756 Lightweight pasture harrow |
| 03/1976 | |
| 03/16/1976 | US3943999 Tines |
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