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Liquid crystal thermometer
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Patent number 6,257,759
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Issue date Jul 10, 2001
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Medical Indicators, Inc.
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Robert J. Witonsky
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G01 - MEASURING TESTING
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Glutaraldehyde indicator
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Patent number 4,643,980
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Issue date Feb 17, 1987
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Info-Chem, Inc.
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Robert J. Witonsky
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G01 - MEASURING TESTING
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Glutaraldehyde indicator
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Patent number 4,521,376
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Issue date Jun 4, 1985
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Info-Chem Inc.
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Robert J. Witonsky
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G01 - MEASURING TESTING
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Time temperature indicators
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Patent number 3,966,414
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Issue date Jun 29, 1976
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Bio-Medical Sciences, Inc.
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Ghazi Khattab
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G01 - MEASURING TESTING
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Disposable food thermometer
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Patent number 3,952,597
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Issue date Apr 27, 1976
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Bio-Medical Sciences, Inc.
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Robert J. Witonsky
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G01 - MEASURING TESTING
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Time temperature indicator
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Patent number 3,942,467
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Issue date Mar 9, 1976
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Bio-Medical Sciences, Inc.
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Robert J. Witonsky
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G01 - MEASURING TESTING