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经营范围
发明名称
Improvements in or relating to unions for pipe lines
摘要
申请公布号
GB626029(A)
申请公布日期
1949.07.07
申请号
GB19470018800
申请日期
1947.07.15
申请人
WELL EQUIPMENT MFG. CORP.
发明人
分类号
F16L17/073;F16L19/03
主分类号
F16L17/073
代理机构
代理人
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地址
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