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Oscillating blast cleaner
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Patent number 5,730,646
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Issue date Mar 24, 1998
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United States Filter Corporation
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Robert B. Watkin
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Oscillating blast cleaner
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Patent number 5,716,261
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Issue date Feb 10, 1998
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The Wheelabrator Corporation,
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Robert B. Watkin
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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Blast chamber
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Patent number 4,908,998
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Issue date Mar 20, 1990
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Wheelabrator Corp.
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Robert B. Watkin
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B24 - GRINDING POLISHING