Engstrom; Donn Jeffrey
Patent Applications and Registrations
Patent applications and USPTO patent grants for Engstrom; Donn Jeffrey.The latest application filed is for "recessed-light conversion apparatus, system, and methods".
- Engstrom; Donn Jeffrey - Bothell WA
| Patent | Date |
|---|---|
| Recessed-light Conversion Apparatus, System, And Methods App 20130153731 - Engstrom; Cheryl ; et al. | 2013-06-20 |
| Recessed-light conversion apparatus, system, and methods Grant 8,376,592 - Engstrom , et al. February 19, 2 | 2013-02-19 |
| Recessed-light Conversion Apparatus, System, And Methods App 20110141741 - Engstrom; Cheryl ; et al. | 2011-06-16 |
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