Johnson; Phillip L. M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson; Phillip L. M..The latest application filed is for "sonar receivers".
- Johnson; Phillip L. M. - Somerset GB2
- Johnson; Phillip L. M. - Yeovil GB2
- Johnson; Phillip L. M. - Yeovil Marsh Nr. Yeovil GB2
| Patent | Date |
|---|---|
| Sonar receivers Grant 4,433,396 - Johnson , et al. February 21, 1 | 1984-02-21 |
| Sonar systems Grant 4,330,876 - Johnson May 18, 1 | 1982-05-18 |
| Target location systems Grant 4,253,166 - Johnson February 24, 1 | 1981-02-24 |
| Target location systems Grant 4,245,220 - Johnson January 13, 1 | 1981-01-13 |
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