David A. Sorenson

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Hamden, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Security classroom function lock mechanism
- Patent number 6,860,129
- Issue date Mar 1, 2005
- Sargent Manufacturing Company
- Darren C. Eller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Security classroom function lock mechanism
- Publication number 20040025548
- Publication date Feb 12, 2004
- Sargent Manufacturing Company
- Darren C. Eller
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES