William R. Hilligoss Jr.

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Los Angeles, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Telephone test instrument
- Patent number 5,025,466
- Issue date Jun 18, 1991
- Communications Manufacturing Company
- William R. Hilligoss
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication lines with terminate and leave capability-DC alarm br...
- Patent number 4,706,271
- Issue date Nov 10, 1987
- Communications Technology Corporation
- Lawrence O. Hilligoss
- G08 - SIGNALLING
Information Patent Grant
Communication lines with terminate and leave capability-VF data bridge
- Patent number 4,661,969
- Issue date Apr 28, 1987
- Communications Technology Corporation
- Myron C. Butler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Remote testing system for electrical circuits
- Patent number 4,639,557
- Issue date Jan 27, 1987
- Communications Technology Corporation
- Myron C. Butler
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic telephonic user emergency message transmitting apparatus
- Patent number 4,371,751
- Issue date Feb 1, 1983
- Newart Electronic Sciences, Inc.
- William R. Hilligoss
- H04 - ELECTRIC COMMUNICATION TECHNIQUE