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| Patents Granted on 1978-03-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,080,009 | Mar. 21, 1978 | O.W. Ehrhardt, B.C. Cuppan, S.M. Marathe, J.C. Scherer | Servostatic Bearing System With Variable Stiffness | metalworking machine bearings | |