Northrop; Donald P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Northrop; Donald P..The latest application filed is for "method for constructing a scotopic after-glow lamp".
- Northrop; Donald P. - Littleton CO
- Northrop; Donald P. - Glen Rock NJ
| Patent | Date |
|---|---|
| Method for constructing a scotopic after-glow lamp Grant 7,300,327 - Bolta , et al. November 27, 2 | 2007-11-27 |
| Method for constructing a scotopic after-glow lamp App 20060057926 - Bolta; Charles ; et al. | 2006-03-16 |
| Scotopic after-glow lamp Grant 6,917,154 - Bolta , et al. July 12, 2 | 2005-07-12 |
| Scotopic after-glow lamp App 20030160560 - Bolta, Charles ; et al. | 2003-08-28 |
| Fluorescent lamp with protective shield Grant 4,924,368 - Northrop , et al. May 8, 1 | 1990-05-08 |
| Compact fluorescent lamp with outer envelope Grant 4,745,323 - Northrop , et al. May 17, 1 | 1988-05-17 |
| Fluorescent lamp with reduced wattage consumption having electrode shield with getter material Grant 4,032,813 - Shurgan , et al. June 28, 1 | 1977-06-28 |
| End cap structures for fluorescent lamps Grant 3,904,916 - Emidy , et al. September 9, 1 | 1975-09-09 |
| Fluorescent Lamps And Method Of Manufacturing The Same Grant 3,749,467 - Emidy , et al. July 31, 1 | 1973-07-31 |
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