IP Library › Granted Patent US 4,720,877
Granted Patent Utility
US 4,720,877 · App. 06/816,701

Drain closure

Inventor: Robert R. Watts
Patented Case View Patent ↗
Granted: Jan 26, 1988 Filed: Jan 7, 1986
Inventor
Robert R. Watts

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Quick Facts
Patent No.
US 4,720,877
App. No.
06/816,701
Filed
1986-01-07
Granted
1988-01-26
Kind
A