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Class Information
Number: 172/209
Name: Earth working > Alternating for right or left hand operation (other than scraper) > Interrelated tool lift and shift
Description: Apparatus having earth working means other than parallel separate tools and means to raise the earth working means from the ground and in which the adjustment of the earth working means for alternate operation results from the operation of the raising means or the lowering of the earth working means to the ground after being raised.

Sub-classes under this class:

Class Number Class Name Patents
172/211 Lift by ground support manipulation 1
172/210 Mast type hitch 0

Patents under this class:

Patent Number Title Of Patent Date Issued
4341148 Hydraulic sequencing valve Jul. 27, 1982

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