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经营范围
发明名称
Improvements in or relating to valves
摘要
申请公布号
GB505717(A)
申请公布日期
1939.05.16
申请号
GB19380013482
申请日期
1938.05.05
申请人
COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ
发明人
分类号
G05D16/10
主分类号
G05D16/10
代理机构
代理人
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