IP Library › Granted Patent US 5,141,633
Granted Patent Utility
US 5,141,633 · App. 07/710,093

Replacement roof drain insert coupling

Inventors: Thomas W. Walczak, Robert M. Bennette
Patented Case View Patent ↗
Granted: Aug 25, 1992 Filed: Jun 4, 1991
Inventors
Thomas W. Walczak
Robert M. Bennette
Assignee (at issue)
Roof Accessories Company, Inc.

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Quick Facts
Patent No.
US 5,141,633
App. No.
07/710,093
Filed
1991-06-04
Granted
1992-08-25
Kind
A