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Electroacoustic transducer
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Patent number 4,964,091
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Issue date Oct 16, 1990
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The United States of America as represented by the Secretary of the Navy
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Rufus L. Cook
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Variable focusing sonar
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Patent number 4,939,697
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Issue date Jul 3, 1990
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The United States of America as represented by the Secretary of the Navy
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Jesse L. Bealor
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G10 - MUSICAL INSTRUMENTS ACOUSTICS
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Conical beam transducer array
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Patent number 4,156,863
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Issue date May 29, 1979
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The United States of America as represented by the Secretary of the Navy
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Theodore C. Madison
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Transducer array having low cross-coupling
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Patent number 4,004,266
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Issue date Jan 18, 1977
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The United States of America as represented by the Secretary of the Navy
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Rufus L. Cook
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Transducer
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Patent number 3,939,467
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Issue date Feb 17, 1976
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The United States of America as represented by the Secretary of the Navy
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Rufus L. Cook
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL