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公开(公告)号:US2163870A
公开(公告)日:1939-06-27
申请号:US7479636
申请日:1936-04-16
Applicant: PINTSCH JULIUS KG
Inventor: WALTER DALLENBACH
IPC: G11B25/06
CPC classification number: G11B25/06
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公开(公告)号:US2141080A
公开(公告)日:1938-12-20
申请号:US9668936
申请日:1936-08-18
Applicant: PINTSCH JULIUS KG
Inventor: WALTER DALLENBACH
IPC: H01J25/70
CPC classification number: H01J25/70
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公开(公告)号:US2128237A
公开(公告)日:1938-08-30
申请号:US5588535
申请日:1935-12-23
Applicant: PINTSCH JULIUS KG
Inventor: WALTER DALLENBACH
IPC: H01J25/70
CPC classification number: H01J25/70
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