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Lathe for blowing glass
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Patent number 5,803,944
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Issue date Sep 8, 1998
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Robert Domka
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C03 - GLASS MINERAL OR SLAG WOOL
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3492106
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Patent number 3,492,106
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Issue date Jan 27, 1970
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3438396
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Patent number 3,438,396
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Issue date Apr 15, 1969
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G05 - CONTROLLING REGULATING
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3429683
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Patent number 3,429,683
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Issue date Feb 25, 1969
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C03 - GLASS MINERAL OR SLAG WOOL
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3052064
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Patent number 3,052,064
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Issue date Sep 4, 1962
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C03 - GLASS MINERAL OR SLAG WOOL