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发明名称
VAKUUMVENTIL.
摘要
申请公布号
DE1816566(U)
申请公布日期
1960.08.11
申请号
DE196000H4382U
申请日期
1960.03.12
申请人
W. C. HERAEUS G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
主权项
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