Thornton, Jr.; Hugh P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Thornton, Jr.; Hugh P..The latest application filed is for "photoelectric smoke detector".
- Thornton, Jr.; Hugh P. - Acton MA
| Patent | Date |
|---|---|
| Photoelectric smoke detector Grant D279,872 - Thornton, Jr. , et al. July 30, 1 | 1985-07-30 |
| Smoke detector Grant D279,769 - Thornton, Jr. , et al. July 23, 1 | 1985-07-23 |
| Smoke detector Grant D271,671 - Thornton, Jr. December 6, 1 | 1983-12-06 |
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