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发明名称
Moving stairway step construction
摘要
申请公布号
US2292534(A)
申请公布日期
1942.08.11
申请号
US19410409484
申请日期
1941.09.04
申请人
OTIS ELEVATOR COMPANY
发明人
MARGLES SAMUEL GUSTAVE
分类号
B66B23/12
主分类号
B66B23/12
代理机构
代理人
主权项
地址
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