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发明名称
Elektriskt urladdningsrör
摘要
申请公布号
FI21874(A)
申请公布日期
1947.02.10
申请号
FI19410002180
申请日期
1941.12.29
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKE
发明人
ALMA GERRIT HENDRIK PETRUS;GERHARDE BERNHARDE
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