SJIRK W. ZIJLSTRA

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SOLANA BEACH, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Cane bolt with spring and slotted stop
- Patent number 8,250,811
- Issue date Aug 28, 2012
- Sjirk W. Zijlstra
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
CANE BOLT WITH SPRING AND SLOTTED STOP
- Publication number 20110179720
- Publication date Jul 28, 2011
- SJIRK W. ZIJLSTRA
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES