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经营范围
发明名称
Variable section nozzle neck
摘要
申请公布号
GB721364(A)
申请公布日期
1955.01.05
申请号
GB19520003418
申请日期
1952.02.08
申请人
CONSERVATOIRE NATIONAL DES ARTS & METIERS;MAURICE MENARD
发明人
分类号
F15D1/08;F16L55/00
主分类号
F15D1/08
代理机构
代理人
主权项
地址
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