Howard A. Gutzmer

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Bonita, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Telephone handset microphone level adjustment
- Patent number 5,555,300
- Issue date Sep 10, 1996
- Howard A. Gutzmer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone handset interface for device having audio input
- Patent number 5,455,859
- Issue date Oct 3, 1995
- Howard A. Gutzmer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Acoustic coupler for high-speed modem
- Patent number 5,134,649
- Issue date Jul 28, 1992
- Howard A. Gutzmer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Modem interface device
- Patent number 4,907,267
- Issue date Mar 6, 1990
- Howard A. Gutzmer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE