David A. Chappell

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Marlborough, MA, US

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Patents Grantslast 30 patents

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- Patent number 8,516,054
- Issue date Aug 20, 2013
- Aurea Software, Inc.
- William M. Cullen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

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- Publication number 20020078132
- Publication date Jun 20, 2002
- William M. Cullen
- G06 - COMPUTING CALCULATING COUNTING