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Elevator control system
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Patent number 4,958,707
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Issue date Sep 25, 1990
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Hitachi, Ltd.
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Kenzi Yoneda
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B66 - HOISTING LIFTING HAULING
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Elevator control system
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Patent number 4,367,811
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Issue date Jan 11, 1983
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Hitachi, Ltd.
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Kenji Yoneda
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B66 - HOISTING LIFTING HAULING
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Elevator control system
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Patent number 4,350,225
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Issue date Sep 21, 1982
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Hitachi, Ltd.
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Kazuhiro Sakata
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B66 - HOISTING LIFTING HAULING
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Elevator control apparatus
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Patent number 4,341,287
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Issue date Jul 27, 1982
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Hitachi, Ltd.
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Soshiro Kuzunuki
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B66 - HOISTING LIFTING HAULING
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