William K. Letson

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Lisbon, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Safety bolt device and system
- Patent number 9,546,507
- Issue date Jan 17, 2017
- William K. Letson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
SAFETY BOLT DEVICE AND SYSTEM
- Publication number 20150130196
- Publication date May 14, 2015
- William K. Letson
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES