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经营范围
发明名称
Improvements in or relating to valves with a passage of annular cross-section
摘要
申请公布号
GB684397(A)
申请公布日期
1952.12.17
申请号
GB19490008765
申请日期
1949.03.31
申请人
ANDRE CULAUD;ATELIERS DES CHARMILIES, S.A.
发明人
分类号
F16K43/00
主分类号
F16K43/00
代理机构
代理人
主权项
地址
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