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Dual optical mechanical position tracker
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Patent number 4,628,239
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Issue date Dec 9, 1986
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The United States of America as represented by the Secretary of the Army
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Seth L. Everett
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G05 - CONTROLLING REGULATING
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Dot matrix color printer
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Patent number 4,605,326
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Issue date Aug 12, 1986
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The United States of America as represented by the Secretary of the Army
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Seth L. Everett
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B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
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Sealed, super 8, optical sound, projection means
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Patent number 4,149,781
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Issue date Apr 17, 1979
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The United States of America as represented by the Secretary of the Army
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Seth L. Everett
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Sealed cassette for optical sound projection
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Patent number 4,005,931
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Issue date Feb 1, 1977
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The United States of America as represented by the Secretary of the Army
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Seth Leroy Everett
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G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY