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Class Information
Number: 172/32
Name: Earth working > With separating after earth working
Description: Apparatus comprising an earth working means and a means for acting on the earth severed from the ground or loosened by the earth working means to classify, separate or assort it according to its physical characteristics and return at least a portion of such earth to the ground.

Patents under this class:

Patent Number Title Of Patent Date Issued
8555992 Turfplaner with autograde and autodepth Oct. 15, 2013
8413736 Farming implement for separating ground elements Apr. 9, 2013
6827151 Sprig harvester Dec. 7, 2004
6488100 Fluff roll for aeration core processing machine Dec. 3, 2002
6321849 Apparatus for collecting/destroying aeration cores Nov. 27, 2001
6142239 Core guide apparatus for aeration core harvesting machine Nov. 7, 2000
5901790 Earth mover and attached vibratory screen May. 11, 1999
5816336 Apparatus and method for destroying wet/dry aeration cores Oct. 6, 1998
5771612 Loader bucket sifting system Jun. 30, 1998
4886124 Soil grading apparatus with sifting and transporting capability Dec. 12, 1989
4850433 Landscape conditioning assembly Jul. 25, 1989
4560009 Apparatus for pulverizing aggregate masses of frangible materials on and below earth surfaces Dec. 24, 1985
4494611 Apparatus for processing soil for planting Jan. 22, 1985
4458763 Soil stabilizer machine with recycler screen Jul. 10, 1984
4313502 Rock extractor apparatus and method Feb. 2, 1982
4267891 Soil cultivating machines May. 19, 1981
4151883 Soil cultivating machines May. 1, 1979
4051902 Soil cultivating implements Oct. 4, 1977
4005755 Machine for rock removal and soil cultivation Feb. 1, 1977
3991830 Land clearing debris pulverizer Nov. 16, 1976
3983942 Plowing, soil refiner and weed or other plantings separator machine Oct. 5, 1976
3981365 Rock gathering machine Sep. 21, 1976

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