William D. Caldwell

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Oregon, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Locking system for a door
- Patent number 6,923,028
- Issue date Aug 2, 2005
- William J. Caldwell
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Locking system for a door
- Publication number 20050081581
- Publication date Apr 21, 2005
- William J. Caldwell
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES