Albert G. Nilssen

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Cupertino, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
DTMF Signal receiver
- Patent number 4,313,038
- Issue date Jan 26, 1982
- Wescom, Inc.
- Albert G. Nilssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone supervision system using DTMF signals
- Patent number 4,219,699
- Issue date Aug 26, 1980
- Wescom, Inc.
- Albert G. Nilssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dual tone multiple frequency receiver/decoder
- Patent number 3,959,603
- Issue date May 25, 1976
- Tone Technology Corporation
- Albert G. Nilssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE