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经营范围
发明名称
Expansion shield
摘要
申请公布号
US2543683(A)
申请公布日期
1951.02.27
申请号
US19490097620
申请日期
1949.06.07
申请人
U. S. EXPANSION BOLT CO.
发明人
JR. GEORGE M. ARISMAN,
分类号
F16B13/12
主分类号
F16B13/12
代理机构
代理人
主权项
地址
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