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Elevator apparatus
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Patent number 5,193,651
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Issue date Mar 16, 1993
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Hitachi, Ltd.
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Masayuki Shigeta
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B66 - HOISTING LIFTING HAULING
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Elevator hoisting apparatus
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Patent number 4,846,309
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Issue date Jul 11, 1989
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Hitachi, Ltd.
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Toshihiko Nara
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B66 - HOISTING LIFTING HAULING
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Fluid-pressure elevator
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Patent number 4,830,146
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Issue date May 16, 1989
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Hitachi, Ltd.
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Ichiro Nakamura
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B66 - HOISTING LIFTING HAULING
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