Novel middle-column-supported additionally-arranged elevator capable of directly reaching original gate of resident

The invention provides a novel middle-column-supported additionally-arranged elevator capable of directly reaching an original gate of a resident. The additionally-arranged elevator is arranged on theouter side of an old building; and according to the additionally-arranged elevator, a stair middle m...

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Bibliographische Detailangaben
1. Verfasser: BAI XIANFANG
Format: Patent
Sprache:chi ; eng
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