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发明名称
Union
摘要
申请公布号
US2523995(A)
申请公布日期
1950.09.26
申请号
US19480041999
申请日期
1948.08.02
申请人
WELL EQUIPMENT MFG. CORP.
发明人
PARMESAN DANIEL J.
分类号
F16L19/02;F16L19/03
主分类号
F16L19/02
代理机构
代理人
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