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发明名称
Expansible plugs for conduits
摘要
申请公布号
US2299116(A)
申请公布日期
1942.10.20
申请号
US19410391893
申请日期
1941.05.05
申请人
BENNETT SVIRSKY
发明人
SVIRSKY BENNETT
分类号
F16L55/134
主分类号
F16L55/134
代理机构
代理人
主权项
地址
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