Erwin; Doug A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Erwin; Doug A..The latest application filed is for "cordless telephone".
- Erwin; Doug A. - Austin TX
| Patent | Date |
|---|---|
| Cordless telephone Grant D428,868 - Bryant , et al. August 1, 2 | 2000-08-01 |
| Telephone Grant D392,284 - Adams , et al. * March 17, 1 | 1998-03-17 |
| Telephone Grant D389,142 - Adams , et al. January 13, 1 | 1998-01-13 |
| Telephone key expansion unit Grant D387,063 - Hillenmayer , et al. December 2, 1 | 1997-12-02 |
| Telephone Grant D386,759 - Elkins , et al. November 25, 1 | 1997-11-25 |
| Telephone Grant D375,095 - Hillenmayer , et al. October 29, 1 | 1996-10-29 |
| Telephone Grant D374,667 - Elkins , et al. October 15, 1 | 1996-10-15 |
| Telephone key expansion unit Grant D374,674 - Elkins , et al. October 15, 1 | 1996-10-15 |
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