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发明名称
ELEVATOR CONSTRUCTION
摘要
申请公布号
CA515391(A)
申请公布日期
1955.08.09
申请号
CAD515391
申请日期
申请人
ARTHUR L. SENN
发明人
ARTHUR L. SENN
分类号
主分类号
代理机构
代理人
主权项
地址
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