John B. Laufer

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Monroeville, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Unlocking device for supplemental door lock
- Patent number 6,802,542
- Issue date Oct 12, 2004
- John B. Laufer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Unlocking device for supplemental door lock
- Publication number 20040007883
- Publication date Jan 15, 2004
- John B. Laufer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Unlocking device for supplemental door lock
- Publication number 20030234545
- Publication date Dec 25, 2003
- John B. Laufer
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES