IP Library › Granted Patent US 4,114,640
Granted Patent Utility
US 4,114,640 · App. 05/758,114

Drain valve

Inventor: Hugh M. Forman
Patented Case View Patent ↗
Granted: Sep 19, 1978 Filed: Jan 10, 1977
Inventor
Hugh M. Forman
Assignee (at issue)
Will Ross, Inc.

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Quick Facts
Patent No.
US 4,114,640
App. No.
05/758,114
Filed
1977-01-10
Granted
1978-09-19
Kind
A