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Tone probe
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Patent number D972535
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Issue date Dec 13, 2022
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Tempo Communications, Inc.
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Mark G Barmettler
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D14 - Recording, communication, or information retrieval equipment
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Self-orienting buried marker
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Patent number 10,845,504
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Issue date Nov 24, 2020
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Tempo Communications, Inc.
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Wilbur Keith Moffatt
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G01 - MEASURING TESTING
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Self-orienting buried marker
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Patent number 10,557,913
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Issue date Feb 11, 2020
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Textron Innovations Inc.
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Curtis Clifford Taylor
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G01 - MEASURING TESTING