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Casting process
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Patent number 4,832,890
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Issue date May 23, 1989
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Toto Ltd.
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Kimiteru Sato
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B28 - WORKING CEMENT, CLAY, OR STONE
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Casting installation
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Patent number 4,798,525
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Issue date Jan 17, 1989
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Toto Ltd.
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Kimiteru Sato
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B28 - WORKING CEMENT, CLAY, OR STONE