IP Library › Granted Patent US 4,485,939
Granted Patent Utility
US 4,485,939 · App. 06/426,984

Planter seed hopper with optional chemical compartments

Inventors: Alexander T. Gafford, David L. Murray
Patented Case View Patent ↗
Granted: Dec 4, 1984 Filed: Sep 29, 1982
Inventors
Alexander T. Gafford
David L. Murray
Assignee (at issue)
Allis-Chalmers Corporation

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Quick Facts
Patent No.
US 4,485,939
App. No.
06/426,984
Filed
1982-09-29
Granted
1984-12-04
Kind
A