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| All Patents in class 327/131 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,095,530 | Jun. 25, 1963 | W.H. Woodward | Digital Control Apparatus for Ward-Leonard Electrical Machines | motor controls | |
| 3,193,700 | Jul. 06, 1965 | R.M. Henderson, J.G. Green, G.A. Dean | Ramp Generator Circuit Employing Two Capacitors, one Including Means for Rapid Discharging Thereof | electronic circuitry and apparatus | |