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Insulated joystick assembly
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Patent number 10,522,273
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Issue date Dec 31, 2019
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Altec Industries, Inc.
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Steven J. Gorghuber
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G05 - CONTROLLING REGULATING
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Oil field mats
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Patent number 4,388,484
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Issue date Jun 14, 1983
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Gerald O. York
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E21 - EARTH DRILLING MINING
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3261909
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Patent number 3,261,909
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Issue date Jul 19, 1966
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H01 - BASIC ELECTRIC ELEMENTS