David H. Feather

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San Diego, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Modular multi-function image-forming apparatus for printing mixed s...
- Patent number 5,655,208
- Issue date Aug 5, 1997
- Ravi & Associates
- Ravi B. Sahay
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Switchable self-propelled magnetic brush
- Patent number 5,523,824
- Issue date Jun 4, 1996
- Ravi & Associates
- Ravi B. Sahay
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Multicolor electrophotographic development system with detachable l...
- Patent number 5,153,659
- Issue date Oct 6, 1992
- ColoRep, Inc.
- Romaine R. Maiefski
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY