William F. O'Keefe

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San Francisco, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fire rated wall/door system
- Patent number 4,601,143
- Issue date Jul 22, 1986
- O'Keefe's, Inc.
- William F. O'Keefe
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS