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| Patents Granted on 1973-11-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,772,857 | Nov. 20, 1973 | R.H. Jackson, G.H. Schultz | Water Air Separator | separators | |
| 3,772,961 | Nov. 20, 1973 | W.R. Siebert | Hydrostatic Rotary Table | rotary tables | |
| 3,774,115 | Nov. 20, 1973 | R.A. Greiner | Signal Generator for Unbalance Detectors | electronic circuitry and apparatus | |