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Patents Grantslast 30 patents

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Anti-piggybacking: sensor system for security door to detect two in...
- Patent number 5,201,906
- Issue date Apr 13, 1993
- Schwarz; Milan
- Milan Schwarz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Security door with improved sensor for detecting unauthorized passage
- Patent number 5,097,454
- Issue date Mar 17, 1992
- Schwarz; Milan
- Milan Schwarz
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

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