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Brick imprinting apparatus
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Patent number 5,318,426
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Issue date Jun 7, 1994
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Fabcon, Inc.
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David W. Hanson
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B28 - WORKING CEMENT, CLAY, OR STONE
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Honeycomb structure
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Patent number 5,098,763
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Issue date Mar 24, 1992
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NGK Insulators, Ltd.
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Osamu Horikawa
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B28 - WORKING CEMENT, CLAY, OR STONE
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3899344
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Patent number 3,899,344
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Issue date Aug 12, 1975
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B28 - WORKING CEMENT, CLAY, OR STONE
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3870777
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Patent number 3,870,777
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Issue date Mar 11, 1975
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B28 - WORKING CEMENT, CLAY, OR STONE
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3848043
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Patent number 3,848,043
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Issue date Nov 12, 1974
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B44 - DECORATIVE ARTS
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3841885
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Patent number 3,841,885
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Issue date Oct 15, 1974
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B28 - WORKING CEMENT, CLAY, OR STONE
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2983083
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Patent number 2,983,083
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Issue date May 9, 1961
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B28 - WORKING CEMENT, CLAY, OR STONE
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2825954
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Patent number 2,825,954
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Issue date Mar 11, 1958
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B28 - WORKING CEMENT, CLAY, OR STONE