Perkins; Joseph R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Perkins; Joseph R..The latest application filed is for "wide angle ceiling mounted passive infrared intrusion detection system".
- Perkins; Joseph R. - Roseville CA
- Perkins; Joseph R. - Burke VA
| Patent | Date |
|---|---|
| Wide angle ceiling mounted passive infrared intrusion detection system Grant 5,089,704 - Perkins February 18, 1 | 1992-02-18 |
| Optical system for use with color sorter or grader Grant 4,150,287 - Perkins April 17, 1 | 1979-04-17 |
| Optical system to optimize field of view uniformity in a multi-color produce sorter Grant 3,981,590 - Perkins September 21, 1 | 1976-09-21 |
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