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Safety circuit for video diver
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Patent number 4,009,419
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Issue date Feb 22, 1977
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General Aquadyne, Inc.
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James R. Ligman
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Diver's helmet
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Patent number D242881
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Issue date Jan 4, 1977
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General Aquadyne, Inc.
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Richard F. Jones
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D02 - Apparel and haberdashery
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Helmet with actuated neck pad
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Patent number 3,991,423
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Issue date Nov 16, 1976
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General Aquadyne, Inc.
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Richard F. Jones
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT