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| Patents Granted on 1986-03-25 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,577,496 | Mar. 25, 1986 | G.A. Kaufman, D.D. Grover | Transducer and Holder Therefor for Ultrasonic Acoustic Tachometer | ||
| 4,578,755 | Mar. 25, 1986 | J.R. Piehl, C.F. Govekar, R.O. Quinn | Microprocessor Controlled Timing/Tachometer Apparatus | ||