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| Patents Granted on 1988-06-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,752,126 | Jun. 21, 1988 | K. Fujii | Surveying Instrument | surveyor | |
| 4,752,867 | Jun. 21, 1988 | L.W. Durham, B.S. Backe | Control Circuitry for Electric Drives | machine tool controls | |