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发明名称
Dispositif pour l'indication ou la surveillance (ou les deux) du vide dans les appareils à décharge dans le vide
摘要
申请公布号
FR748695(A)
申请公布日期
1933.07.07
申请号
FRD748695
申请日期
1932.07.19
申请人
发明人
LEHMANN WALTER
分类号
H01J7/42
主分类号
H01J7/42
代理机构
代理人
主权项
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