Petersen; Niel R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Petersen; Niel R..The latest application filed is for "tetraxial vehicle test fixture".
- Petersen; Niel R. - Hopkins MN
| Patent | Date |
|---|---|
| Tetraxial vehicle test fixture Grant 4,263,809 - Petersen , et al. April 28, 1 | 1981-04-28 |
| Pneumatic linear spring device Grant 4,033,566 - Petersen July 5, 1 | 1977-07-05 |
| Pressure balanced bearing with external height control valve Grant 3,994,540 - Petersen November 30, 1 | 1976-11-30 |
| Pressure balanced hydrostatic slip bearing used in a guide and restraint system Grant 3,921,286 - Petersen November 25, 1 | 1975-11-25 |
| Multiple Axis Control System For Vibration Test Apparatus Grant 3,800,588 - Larson , et al. April 2, 1 | 1974-04-02 |
| Testing Apparatus Utilizing Position-force Cross Coupling Control Grant 3,718,033 - Petersen February 27, 1 | 1973-02-27 |
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