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Multiple-gang disk harrow
US 2,688,831 A
Filed
: 02/11/1950
Issued
: 09/14/1954
Est. Priority Date
: 02/11/1950
Status: Expired due to Term
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Current Assignee
Alvan V. Burch
,
John F. Rude
Original Assignee
Alvan V. Burch
,
John F. Rude
Inventors
Rude, John F.
,
Burch, Alvan V.
Application Number
US03/143,776
Time in Patent Office
1,676 Days
Field of Search
US Class Current
172/588
CPC Class Codes
A01B 21/08
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