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发明名称
Extendable mast
摘要
申请公布号
US2793717(A)
申请公布日期
1957.05.28
申请号
US19500188975
申请日期
1950.10.07
申请人
CAMBURN SALES & MFG. CORPORATION
发明人
CAMBURN ELWYN A.
分类号
E04H12/18
主分类号
E04H12/18
代理机构
代理人
主权项
地址
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