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All Patents in class 307/152 | |||||
Number | Date | Patentee | Title | Type | |
4,081,801 | Mar. 28, 1978 | H.J. Keen, H.C. Thomas | Electronic Measuring System with Pulsed Transducer | electrical measuring apparatus | |
4,238,784 | Dec. 09, 1980 | H.C. Thomas, H.J. Keen | Electronic Measuring System with Pulsed Power Supply and Stability Sensing | electrical measuring apparatus |