IP Library › Granted Patent US 4,805,920
Granted Patent Utility
US 4,805,920 · App. 07/175,662

Pipe seal and closure member

Inventor: Norman W. Gavin
Patented Case View Patent ↗
Granted: Feb 21, 1989 Filed: Mar 21, 1988
Inventor
Norman W. Gavin

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Quick Facts
Patent No.
US 4,805,920
App. No.
07/175,662
Filed
1988-03-21
Granted
1989-02-21
Kind
A