Fredrick L. Drain

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San Francisco, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for selecting a reference line for image data compression
- Patent number 4,837,848
- Issue date Jun 6, 1989
- Netexpress Systems, Inc.
- Alex E. Henderson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for block coding vertical mode codes for enhan...
- Patent number 4,794,461
- Issue date Dec 27, 1988
- Netexpress Systems, Inc.
- Lawrence G. Roberts
- H04 - ELECTRIC COMMUNICATION TECHNIQUE