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Rolling shutter
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Issue date Apr 27, 1993
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Sanwa Shutter Corporation
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Masaaki Munekata
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3712258
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Patent number 3,712,258
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Issue date Jan 23, 1973
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3698346
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Patent number 3,698,346
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Issue date Oct 17, 1972
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3348516
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Patent number 3,348,516
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Issue date Oct 24, 1967
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3142333
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Patent number 3,142,333
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Issue date Jul 28, 1964
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3123129
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Patent number 3,123,129
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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3072178
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Patent number 3,072,178
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2958083
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Patent number 2,958,083
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Issue date Nov 1, 1960
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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2042002
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Patent number 2,042,002
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
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1656089
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Issue date Jan 10, 1928
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B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT