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经营范围
发明名称
Improvements in or relating to closures for pipes and the like
摘要
申请公布号
GB375869(A)
申请公布日期
1932.07.04
申请号
GB19310010105
申请日期
1931.04.02
申请人
FREDERICK LEONARD BALL;FRANK MOULTON;THE LEAD WOOL COMPANY LIMITED
发明人
分类号
F16J13/08
主分类号
F16J13/08
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代理人
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地址
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