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经营范围
发明名称
Pipe joint seal ring
摘要
申请公布号
US2140939(A)
申请公布日期
1938.12.20
申请号
US19360082490
申请日期
1936.05.29
申请人
M. B. SKINNER COMPANY
发明人
MERRILL PATTERSON D.;MCMURRAY FREDERICK R.
分类号
F16L55/178
主分类号
F16L55/178
代理机构
代理人
主权项
地址
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