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Patents Grantslast 30 patents

Information Patent Grant
Integrated alarm and touch tone telephone system
- Patent number 4,791,658
- Issue date Dec 13, 1988
- Simon; Theodore
- Theodore Simon
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Voltage enhancement circuit for central station monitored alarm sys...
- Patent number 4,083,039
- Issue date Apr 4, 1978
- Simon; Theodore
- Theodore Simon
- G08 - SIGNALLING
Information Patent Grant
Alarm system including remote signalling means
- Patent number 4,064,508
- Issue date Dec 20, 1977
- Simon; Theodore
- Theodore Simon
- G08 - SIGNALLING

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