Sentry Products, Inc.

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
High security ultrasonic receiver apparatus
- Patent number 5,371,719
- Issue date Dec 6, 1994
- Sentry Products, Inc.
- James W. Burn
- G08 - SIGNALLING
Information Patent Grant
Ultrasonic signal generating device
- Patent number 4,142,478
- Issue date Mar 6, 1979
- Sentry Products, Inc.
- Robert J. Husman
- G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

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