Lappen; David Irwin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Lappen; David Irwin.The latest application filed is for "remote telephone ringer controller".
- Lappen; David Irwin - Santa Monica CA
| Patent | Date |
|---|---|
| Remote telephone ringer controller Grant 5,930,351 - Lappen , et al. July 27, 1 | 1999-07-27 |
| Method and apparatus for monitoring video signals in a computer Grant 5,812,785 - Lappen , et al. September 22, 1 | 1998-09-22 |
| Method and apparatus for monitoring video signals in a computer Grant 5,687,096 - Lappen , et al. November 11, 1 | 1997-11-11 |
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