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2023
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Invention
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Elevator pulled by dual-motor drive device. An elevator pulled by a dual-motor drive device, comp... |
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Invention
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Elevator using electric-motor drive device for traction. An elevator using an electric-motor driv... |
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2022
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Invention
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Preparation method for ultra-high molecular weight polyethylene nanocomposite material product, m... |
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2018
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Invention
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Elevator car door machine device. An elevator car door machine device, comprising an elevator doo... |
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Invention
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Elevator car door machine device having car door lock. An elevator car door machine device having... |
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Invention
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Elevator floor door lock device and elevator floor door device. An elevator floor door lock devic... |
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2017
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Invention
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Elevator traction machine. An elevator traction machine. A motor (1) of the elevator traction mac... |
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2013
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Invention
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Safety detection device of passenger conveying apparatus and implementation method thereof. Discl... |
