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发明名称
Perfectionnements aux générateurs de vapeur
摘要
申请公布号
FR702551(A)
申请公布日期
1931.04.11
申请号
FRD702551
申请日期
1930.08.21
申请人
发明人
BAUMANN KARL
分类号
F22B1/14
主分类号
F22B1/14
代理机构
代理人
主权项
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