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经营范围
发明名称
Expansible prong device
摘要
申请公布号
US2396276(A)
申请公布日期
1946.03.12
申请号
US19430490547
申请日期
1943.06.11
申请人
BOCJL CORPORATION
发明人
LANG JOSEPH C.
分类号
E02D5/80
主分类号
E02D5/80
代理机构
代理人
主权项
地址
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