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Class Information
Number: 172/425
Name: Earth working > With ground support vertically adjustable relative to frame > With actuator > Gearing
Description: Apparatus in which the actuator comprises gearing.

Sub-classes under this class:

Class Number Class Name Patents
172/428 Rack and pinion or ratchet type 0
172/427 Screw jack type 13
172/426 Worm gear 0

Patents under this class:

Patent Number Title Of Patent Date Issued
6883616 Walk-behind landscape edger/trencher Apr. 26, 2005
5579850 Cultivating system and cultivating machine with plow-depth control function Dec. 3, 1996
4373456 Agricultural furrow forming apparatus depth control Feb. 15, 1983

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