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Method of making foam material
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Patent number 5,204,040
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Issue date Apr 20, 1993
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Kun-Huang Chang
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Method of reinforcing a structure member
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Patent number 4,995,545
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Issue date Feb 26, 1991
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Essex Composite Systems
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Joseph Wycech
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Method for filling abandoned mines
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Patent number 4,744,700
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Issue date May 17, 1988
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Washington Penn Plastic Co.
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Albert Andy
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING