John P. Ellenberger

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Groton, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of operating a computer graphics system including asynchrono...
- Patent number 5,251,322
- Issue date Oct 5, 1993
- Digital Equipment Corporation
- Peter L. Doyle
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
High performance graphics workstation
- Patent number 5,155,822
- Issue date Oct 13, 1992
- Digital Equipment Corporation
- Peter L. Doyle
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Graphics workstation for creating graphics data structure which are...
- Patent number 5,097,411
- Issue date Mar 17, 1992
- Digital Equipment Corporation
- Peter L. Doyle
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for the continuous and asynchronous traversal...
- Patent number 4,928,247
- Issue date May 22, 1990
- Digital Equipment Corporation
- Peter L. Doyle
- G06 - COMPUTING CALCULATING COUNTING