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经营范围
发明名称
Elevator
摘要
申请公布号
US1782754(A)
申请公布日期
1930.11.25
申请号
US19290350580
申请日期
1929.03.28
申请人
WILCOX CHARLES E
发明人
WILCOX CHARLES E.
分类号
E21B19/06
主分类号
E21B19/06
代理机构
代理人
主权项
地址
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