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Temperature sensor
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Patent number D343130
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Issue date Jan 11, 1994
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Terry A. Gambill
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D10 - Measuring, testing, or signalling instruments
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Digital voltmeter
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Patent number 5,250,893
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Issue date Oct 5, 1993
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Tegam, Inc.
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Terry A. Gambill
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G01 - MEASURING TESTING
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Soldering iron testing apparatus
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Patent number 5,130,640
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Issue date Jul 14, 1992
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Tegam, Inc.
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Terry A. Gambill
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR