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| Patents for B06B 1 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency (14,020) |
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| 03/30/1976 | US3947644 Piezoelectric-type electroacoustic transducer | | 03/30/1976 | US3946829 Ultrasonic device | | 03/23/1976 | USRE28745 Electronic Siren Circuit | | 03/23/1976 | US3946338 Acoustic wave devices involving perturbation of acoustic velocity by diffusion of metals | | 03/23/1976 | US3945613 Vibrating device | | 03/23/1976 | US3945259 Vibration generator | | 03/23/1976 | US3945112 Technique for fabrication of foil electret | | 03/09/1976 | US3943388 Electroacoustic transducer of the flexural vibrating diaphragm type | | 02/17/1976 | US3939469 Detection streamer | | 02/17/1976 | US3939467 Transducer | | 02/17/1976 | US3938905 Noiseless air-actuated turbine-type vibrator with muffler | | 02/17/1976 | US3938502 Apparatus with a catheter for examining hollow organs or bodies with the ultrasonic waves | | 02/10/1976 | US3938142 Ultrasonic transmitter for the remote control of radio and television receivers | | 02/10/1976 | US3937991 Electroacoustic transducers of the bilaminar flexural vibrating type and method for manufacturing same | | 01/27/1976 | US3935484 Replaceable acoustic transducer assembly | | 01/27/1976 | US3934460 Apparatus for focusing and collimating ultrasonic waves | | 01/13/1976 | US3932836 DC/AC motor drive for a downhole acoustic transmitter in a logging-while-drilling system | | 01/13/1976 | US3932057 Noiseless air-actuated turbine-type vibrator with blades arranged in a sidewardly extending annular pattern | | 01/06/1976 | US3931549 Control circuit for electromagnetic transducer | | 01/06/1976 | US3931533 Ultrasonic signal generator |
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