Assignee
FRED M DELLORFANO JR AND DONAL
6 granted patents·53 citations·filing 1970–1977
Top patents by PatentIndex Score
6 records- 0167US4028504AAcoustic amplifier combined with transducer shock mountFRED M DELLORFANO JR AND DONAL·Filed 1975·Granted Jun 7, 1977·19 cites·8 claims
- 0251US3967260AIntrusion alarm system with improved air turbulence compensationFRED M DELLORFANO JR AND DONAL·Filed 1974·Granted Jun 29, 1976·8 cites·10 claims
- 0348US3937991AElectroacoustic transducers of the bilaminar flexural vibrating type and method for manufacturing sameFRED M DELLORFANO JR AND DONAL·Filed 1971·Granted Feb 10, 1976·12 cites·12 claims
- 0444US4128370AManufacture of electroacoustic transducers which require molding an elastomer to the surface of the transducer materialFRED M DELLORFANO JR AND DONAL·Filed 1977·Granted Dec 5, 1978·9 cites·3 claims
- 0536US3932833AInstrument for direct measurement of the velocity of sound in a fluidFRED M DELLORFANO JR AND DONAL·Filed 1970·Granted Jan 13, 1976·3 cites·5 claims
- 0632US4033180AUltrasonic microphone for operating with an accumulated layer of mud over its vibratile surface without change in sensitivity within its prescribed frequency rangeFRED M DELLORFANO JR AND DONAL·Filed 1976·Granted Jul 5, 1977·2 cites·6 claims
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