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Wire brick cutter
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Patent number 4,085,635
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Issue date Apr 25, 1978
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Lingl Corporation
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Hans Lingl
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B28 - WORKING CEMENT, CLAY, OR STONE
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3757623
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Patent number 3,757,623
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Issue date Sep 11, 1973
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B28 - WORKING CEMENT, CLAY, OR STONE
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1369522
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Patent number 1,369,522
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Issue date Feb 22, 1921
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B28 - WORKING CEMENT, CLAY, OR STONE