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Freeze indicator
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Patent number 5,239,942
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Issue date Aug 31, 1993
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PyMaH Corporation
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Ramon T. Ignacio
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G01 - MEASURING TESTING
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Freeze indicator
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Patent number 5,111,768
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Issue date May 12, 1992
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PyMaH Corporation
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Raymond P. Larsson
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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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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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