Henry S. Landgraf

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Haddon Township, Camden County, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Monaural and stereo audio signal control system
- Patent number 6,707,917
- Issue date Mar 16, 2004
- General Instrument Corporation
- Henry S. Landgraf
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for upgrading features and functions of a set...
- Patent number 6,154,633
- Issue date Nov 28, 2000
- Motorola, Inc.
- Henry S. Landgraf
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for recovering synchronizing signals in scramb...
- Patent number 5,644,637
- Issue date Jul 1, 1997
- General Instrument Corporation of Delaware
- Henry Sebastian Landgraf
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for frustrating vertical interval detection in...
- Patent number 5,287,409
- Issue date Feb 15, 1994
- General Instrument Corporation
- Richard Westerfer
- H04 - ELECTRIC COMMUNICATION TECHNIQUE