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Piezoelectric transducer
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Patent number 4,228,532
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Issue date Oct 14, 1980
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Claude C. Sims
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Alarm buzzer apparatus
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Patent number 4,183,017
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Issue date Jan 8, 1980
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Marine Resources, Inc.
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Claude C. Sims
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Dual resonance bender transducer
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Patent number 4,075,600
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Issue date Feb 21, 1978
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The United States of America as represented by the Secretary of the Navy
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Claude C. Sims
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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