MASSA DONALD P COHASSET
MASSA DONAActive Patents
0
Total Holdings
5
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3847662A | Apparatus and method for sonic cleaning of human teeth | Expired / Lapsed | 1972-06-28 | 1974-11-12 | 25 | Details |
| US3716828A | Electroacoustic transducer with improved shock resistance | Expired / Lapsed | 1970-02-02 | 1973-02-13 | 10 | Details |
| US3715711A | High power,low frequency underwater transducer array | Expired / Lapsed | 1970-09-14 | 1973-02-06 | 17 | Details |
| US3510698A | Electroacoustical transducer | Expired / Lapsed | 1967-04-17 | 1970-05-05 | 0 | Details |
| US3474403A | Electroacoustic transducer with improved shock resistance | Expired / Lapsed | 1966-06-08 | 1969-10-21 | 0 | Details |