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Patent applications and USPTO patent grants for Darrel; Bernard.The latest application filed is for "acoustical defect detection system".
Patent | Date |
---|---|
Acoustical defect detection system Grant 4,429,578 - Darrel , et al. February 7, 1 | 1984-02-07 |
Method and system for corona source location by acoustic signal detection Grant 4,095,173 - Darrel June 13, 1 | 1978-06-13 |
Foreign Object Impact Detection In Multi-bladed Fluid Engines Grant 3,798,626 - Weichbrodt , et al. March 19, 1 | 1974-03-19 |
Automatic Sonic Detection Of Chipped Cutting Tools Grant 3,793,627 - Darrel , et al. February 19, 1 | 1974-02-19 |
Damage Detection Method And Apparatus For Machine Elements Utilizing Vibrations Therefrom Grant 3,677,072 - Weichbrodt , et al. July 18, 1 | 1972-07-18 |
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