IP Library › Granted Patent US 4,557,740
Granted Patent Utility
US 4,557,740 · App. 06/648,517

Weather louver

Inventor: Richard L. Smith
Patented Case View Patent ↗
Granted: Dec 10, 1985 Filed: Sep 10, 1984
Inventor
Richard L. Smith
Assignee (at issue)
Allis-Chalmers Corporation

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Quick Facts
Patent No.
US 4,557,740
App. No.
06/648,517
Filed
1984-09-10
Granted
1985-12-10
Kind
A