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Reconfigure modular tooling
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Patent number 5,851,563
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Issue date Dec 22, 1998
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McDonnell Douglas Corporation
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Peter L. Hoffman
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B28 - WORKING CEMENT, CLAY, OR STONE
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Conformable tool
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Patent number 5,168,635
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Issue date Dec 8, 1992
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McDonnell Douglas Corporation
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Peter L. Hoffman
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B28 - WORKING CEMENT, CLAY, OR STONE