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Class 172/238 - GROUND SUPPORT MOVED VERTICALLY RELATIVE TO FRAME BY DRAFT MEANS


Subclass of Class 172 - Earth working
Definition: Apparatus comprising a framework, a ground wheel or wheel
No. of patents: 2
Last issue date: 06/11/2002


NumberTitleIssue Date
6401832Agricultural implement lift wheel structure
Lift wheel structure for an implement includes four bar linkage having a curved lower link connected to the frame closely adjacent a first tool-carrying rank. A caster wheel is supported at the forward end of the linkage for castering in an accommodation ...
06/11/2002
5543771Phase shifting transformer or autotransformer
A phase shifting polygonal transformer or autotransformer for a three phase electrical distribution system is provided, in which the transformer output winding or autotransformer winding is composed solely of three main coils and three auxiliary coils, al...
08/06/1996
 
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