David A. Rolfe

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Pasadena, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Search and retrieval system
- Patent number 5,303,361
- Issue date Apr 12, 1994
- Lotus Development Corporation
- Steve Colwell
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for determining boundaries of graphic regions
- Patent number 4,788,538
- Issue date Nov 29, 1988
- Lotus Development Corporation
- Stephen A. Klein
- G06 - COMPUTING CALCULATING COUNTING