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Ceramic building block
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Patent number 5,329,737
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Issue date Jul 19, 1994
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PolyCeramics, Inc.
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Peter A. Roberts
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E04 - BUILDING
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Ceramic filter process
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Patent number 5,298,205
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Issue date Mar 29, 1994
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PolyCeramics, Inc.
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Kevin G. Hayes
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B44 - DECORATIVE ARTS
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Ceramic process
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Patent number 5,296,180
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Issue date Mar 22, 1994
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PolyCeramics, Inc.
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Kevin G. Hayes
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B44 - DECORATIVE ARTS