Chestel, Inc.

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Chester, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Time division multiplexed PABX communication switching system
- Patent number 4,087,643
- Issue date May 2, 1978
- Chestel, Inc.
- David L. Joslow
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone set with loop current interruption timing control
- Patent number 4,086,440
- Issue date Apr 25, 1978
- Chestel, Inc.
- Robert J. Hurle
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital tone decoder
- Patent number 4,016,370
- Issue date Apr 5, 1977
- Chestel, Inc.
- Chansak Laoteppitaks
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic time-division-multiplexed PABX telephone system
- Patent number 3,937,892
- Issue date Feb 10, 1976
- Chestel, Inc.
- Alan Bloch
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

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