Earth working – With drive means for tool or cleaner – Plural driven tools
Patent
1972-07-13
1977-01-18
Crowder, Clifford D.
Earth working
With drive means for tool or cleaner
Plural driven tools
172102, 172111, 172391, 172572, A01B 3302
Patent
active
040034372
ABSTRACT:
A harrow having two horizontal elongated tined members the ends of which are driven around substantially vertical axes and including a soil contacting elongated element mounted to each of the tined members.
REFERENCES:
patent: 128067 (1872-06-01), Reed
patent: 327713 (1885-10-01), Nelson
patent: 542880 (1895-07-01), Faris
patent: 837450 (1906-12-01), Crook
patent: 1166135 (1915-12-01), Lamp
patent: 1304952 (1919-05-01), Enloe
patent: 3422907 (1964-01-01), Gijzenberg
patent: 3499494 (1970-03-01), Gijzenberg
Crowder Clifford D.
Sewell Paul T.
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