Johnson, Jr.; Virgil E.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnson, Jr.; Virgil E..The latest application filed is for "device for determining the volume of objects using a chamber with two resonators to compensate for temperature and humidity effects".
- Johnson, Jr.; Virgil E. - Gaithersburg MD
| Patent | Date |
|---|---|
| Device for determining the volume of objects using a chamber with two resonators to compensate for temperature and humidity effects Grant 5,385,069 - Johnson, Jr. January 31, 1 | 1995-01-31 |
| Enhancing liquid jet erosion Grant 4,681,264 - Johnson, Jr. July 21, 1 | 1987-07-21 |
| Enhancing liquid jet erosion Grant 4,474,251 - Johnson, Jr. October 2, 1 | 1984-10-02 |
| Enhancing liquid jet erosion Grant 4,389,071 - Johnson, Jr. , et al. June 21, 1 | 1983-06-21 |
| Cavitating liquid jet assisted drill bit and method for deep-hole drilling Grant 4,262,757 - Johnson, Jr. , et al. April 21, 1 | 1981-04-21 |
| Movable ramp inlet for water jet propelled ships Grant 3,942,463 - Johnson, Jr. , et al. March 9, 1 | 1976-03-09 |
| System For Eroding Solids With A Cavitating Fluid Jet Grant 3,807,632 - Johnson, Jr. April 30, 1 | 1974-04-30 |
| System For Eroding Solids With A Cavitating Fluid Jet Grant 3,713,699 - Johnson, Jr. January 30, 1 | 1973-01-30 |
| Stable Ocean Platform Grant 3,635,253 - Johnson, Jr. , et al. January 18, 1 | 1972-01-18 |
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