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Lenticular lens array
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Patent number 6,795,250
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Issue date Sep 21, 2004
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LentiClear Lenticular Lens, Inc.
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Ralph Barry Johnson
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G02 - OPTICS
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Elliptically-shaped tool
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Patent number 6,741,395
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Issue date May 25, 2004
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LentiClear Lenticular Lens, Inc.
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Ralph Barry Johnson
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G02 - OPTICS
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Flat panel thermal infrared generator
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Patent number 5,910,659
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Issue date Jun 8, 1999
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The United States of America as represented by the Secretary of Commerce
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Ralph Barry Johnson
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G01 - MEASURING TESTING