| Patents for Orville W. Ehrhardt |
Patents 1 -
3
of 3
      |
| Number | Date | Patentee | Title | Type |
| 3,857,051 | Dec. 24, 1974 | O.W. Ehrhardt, D.J. Seicher | Rotary Position Transducer Assembly Using Hydrostatic Bearings | metalworking machine mechanisms |
| 3,988,965 | Nov. 02, 1976 | R.V. Fatke, O.W. Ehrhardt, D.J. Cayen | Two Pressure Counterbalance System for Machine Tool Headstocks | metalworking machine mechanisms |
| 4,080,009 | Mar. 21, 1978 | J.C. Scherer, O.W. Ehrhardt, B.C. Cuppan, S.M. Marathe | Servostatic Bearing System With Variable Stiffness | metalworking machine bearings |
