Harrison, Jr.; Earnest R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Harrison, Jr.; Earnest R..The latest application filed is for "air release in seismic source air gun".
- Harrison, Jr.; Earnest R. - Plano TX
- Harrison, Jr.; Earnest R. - Severna Park MD
- Harrison, Jr.; Earnest R. - Crownsville MD
- Harrison, Jr.; Earnest R. - Glen Burnie MD
| Patent | Date |
|---|---|
| Air release in seismic source air gun Grant 4,623,033 - Harrison, Jr. November 18, 1 | 1986-11-18 |
| Delay lattice filter for radar doppler processing Grant 4,578,676 - Harrison, Jr. March 25, 1 | 1986-03-25 |
| Means for reducing spurious frequencies in a direct frequency synthesizer Grant 4,185,247 - Harrison, Jr. January 22, 1 | 1980-01-22 |
| Electronic compass system Grant 3,899,834 - Harrison, Jr. August 19, 1 | 1975-08-19 |
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