Hobrough; Gilbert L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hobrough; Gilbert L..The latest application filed is for "stereophonic sound system".
- Hobrough; Gilbert L. - Vancouver British Columbia CA
- Hobrough; Gilbert L. - Vancouver 13 B.C. CA
- Hobrough; Gilbert L. - Los Altos CA
- Hobrough; Gilbert L. - Woburn MA
| Patent | Date |
|---|---|
| Stereophonic sound system Grant 4,622,689 - Hobrough November 11, 1 | 1986-11-11 |
| Loudspeaker housing Grant D276,519 - Hobrough , et al. November 27, 1 | 1984-11-27 |
| Ribbon loudspeaker having corregated ribbon for reducing distortion Grant 4,473,723 - Hobrough September 25, 1 | 1984-09-25 |
| Loudspeaker housing Grant D263,470 - Hobrough , et al. March 23, 1 | 1982-03-23 |
| Loudspeaker housing Grant D263,471 - Hobrough , et al. March 23, 1 | 1982-03-23 |
| Image transformation system with variable delay Grant 3,958,232 - Hobrough , et al. May 18, 1 | 1976-05-18 |
| Hexagonal Patch Printing For Orthophoto Printers Grant 3,777,055 - Hobrough December 4, 1 | 1973-12-04 |
| Digital Parallax Discriminator System Grant 3,651,416 - Hobrough March 21, 1 | 1972-03-21 |
| Correlation Unit Grant 3,646,336 - Hobrough February 29, 1 | 1972-02-29 |
| Automatic Stereo Instrument For Registration Of Similar Stereo Photographs Grant 3,595,995 - Hobrough July 27, 1 | 1971-07-27 |
| Transformation And Registration Of Photographic Images Grant 3,564,133 - Hobrough February 16, 1 | 1971-02-16 |
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