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Class Information
Number: 172/148
Name: Earth working > Diverse tools > Three or more diverse implements following same path (a, b, c, or a, b, a,) > Longitudinally spaced like implements with intermediate diverse implement (a, b, a)
Description: Apparatus in which the first and third implements in the direction of travel are alike and the intermediate or second implement is of a different type.

Patents under this class:

Patent Number Title Of Patent Date Issued
6382873 Soil levelling device May. 7, 2002
5590721 Conservation tillage tool Jan. 7, 1997
5477792 Apparatus for preparing soil for seed and method of using the apparatus Dec. 26, 1995
5156216 Conservation compliance tillage tool Oct. 20, 1992
4412589 Earth clod pulverizer Nov. 1, 1983
4374546 Conditioning apparatus for dirt race tracks Feb. 22, 1983
4243104 Soil working machine Jan. 6, 1981

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