Title:
Fulcrum device for earth-working implements
United States Patent 1583181

Inventors:
Salvador, Rubio
Publication Date:
05/04/1926
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Assignee:
Salvador, Rubio
Primary Class:
224/267
Other Classes:
224/268, 2/24, 224/907, 224/270
International Classes:
A01B1/02; A01B1/00