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发明名称
Improvements in closure members for pipes and the like
摘要
申请公布号
GB771261(A)
申请公布日期
1957.03.27
申请号
GB19550008591
申请日期
1955.03.24
申请人
THOMAS THORNTON SHIPMAN
发明人
分类号
F16L55/115
主分类号
F16L55/115
代理机构
代理人
主权项
地址
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