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High pressure forming bushing
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Patent number 4,351,656
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Issue date Sep 28, 1982
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PPG Industries, Inc.
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Thomas H. Jensen
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C03 - GLASS MINERAL OR SLAG WOOL
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Modular molten glass column
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Patent number 4,344,785
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Issue date Aug 17, 1982
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PPG Industries, Inc.
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Thomas H. Jensen
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C03 - GLASS MINERAL OR SLAG WOOL
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Split bushing control
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Patent number 4,024,336
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Issue date May 17, 1977
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PPG Industries, Inc.
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Thomas H. Jensen
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G05 - CONTROLLING REGULATING
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Bushing fabrication
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Patent number 3,973,717
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Issue date Aug 10, 1976
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PPG Industries, Inc.
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Thomas H. Jensen
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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