Patents for A01M 21 - Apparatus for the destruction of unwanted vegetation, e.g. weeds (1,840)
04/1981
04/22/1981EP0027440A2 Method and apparatus for treating crops in rows
04/21/1981US4262846 Method for the distribution of biologically active chemicals
04/08/1981EP0026248A1 Machine and method for plant destruction using electricity
03/1981
03/24/1981US4257190 Crop row centering
03/03/1981US4253272 Moisture sensing apparatus and method for an agricultural chemical applicator
03/03/1981CA1096934A1 Method and apparatus for using electrical current to destroy weeds in and around crop rows
02/1981
02/24/1981US4251950 Electronic silvicidal apparatus
11/1980
11/12/1980EP0018807A1 Apparatus for the chemical treatment of crops
11/12/1980EP0018797A1 Liquid applying apparatus
09/1980
09/23/1980US4223479 Feedback controlled roller applicator
09/23/1980US4223478 Agricultural chemical applicator
09/17/1980EP0015325A1 Method and apparatus for plant-sparing distribution of liquids on agricultural crops
09/16/1980CA1085909A1 Top desiccation of crop plants
09/02/1980US4219964 Rope wick applicator
07/1980
07/01/1980US4210286 Pole mounted weed killer dispenser
06/1980
06/24/1980US4208835 Herbicide applicator
04/1980
04/22/1980US4198781 Plant destruction utilizing electrically conductive liquid
04/17/1980WO1980000666A1 Method and apparatus for applying chemicals to weeds and plants
04/16/1980EP0009929A1 Method and apparatus for the distribution of biologically active chemicals
02/1980
02/12/1980US4187638 Method and apparatus for applying chemicals to weeds and plants
12/1979
12/11/1979US4177603 Plant destruction using electricity
11/1979
11/06/1979US4173094 Method for treating ground surfaces with a toxic agent
11/1978
11/28/1978US4126962 Plant care device
09/1978
09/05/1978US4110933 Process and an apparatus for killing trees or woody plants
08/1978
08/29/1978CA1037257A1 Vegetation control
06/1978
06/13/1978US4094095 Method and apparatus for using electrical current to destroy weeds in and around crop rows
06/06/1978US4092800 Vegetation control
05/1978
05/30/1978US4092112 Soil fumigant kit
04/1978
04/04/1978US4082567 Thermal herbicide
09/1977
09/13/1977US4047326 Vascular contact rotating and stationary abrading electrode devices for electric weed killing
07/1977
07/12/1977US4035173 Conifers, pinaceae urea, ammonia, ammonium sulfates, nitrates of ammonia, calcium and potassium
07/05/1977US4033270 Agricultural soil chemical incorporator
06/1977
06/07/1977US4027986 Herbicide applicator
06/07/1977US4027733 Weed pulling machine
04/1977
04/26/1977US4019278 Device for the application of chemicals to field crops and/or other plant concentrations
02/1977
02/15/1977US4007794 Top desiccation of crop plants
06/1976
06/22/1976US3964405 Perennial weed control by deep placement of volatile soil fumigants
06/01/1976US3959924 Automatic spot sprayer
03/1976
03/23/1976US3945370 Burner
02/1976
02/03/1976US3935670 Apparatus for selectively applying electrical current to plants
1 ... 9 10 11 12 13 14 15 16 17 18 19