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经营范围
发明名称
Hoisting apparatus
摘要
申请公布号
US2613914(A)
申请公布日期
1952.10.14
申请号
US19490120255
申请日期
1949.10.08
申请人
WALLACE DAVID A
发明人
WALLACE DAVID A.
分类号
B66F7/06
主分类号
B66F7/06
代理机构
代理人
主权项
地址
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