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3889105
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Patent number 3,889,105
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Issue date Jun 10, 1975
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G05 - CONTROLLING REGULATING
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3731043
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Patent number 3,731,043
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Issue date May 1, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3731045
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Patent number 3,731,045
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Issue date May 1, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3668653
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Patent number 3,668,653
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Issue date Jun 6, 1972
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G05 - CONTROLLING REGULATING