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公开(公告)号:US2146374A
公开(公告)日:1939-02-07
申请号:US74335534
申请日:1934-09-10
Applicant: KING LAB INC
Inventor: KING ADEN J
IPC: H01J7/18
CPC classification number: H01J7/186
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公开(公告)号:US3420593A
公开(公告)日:1969-01-07
申请号:US3420593D
申请日:1967-02-23
Applicant: KING LAB INC
Inventor: KING ADEN J
CPC classification number: H01J29/94
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公开(公告)号:US2437097A
公开(公告)日:1948-03-02
申请号:US57153745
申请日:1945-01-05
Applicant: KING LAB INC
Inventor: KING ADEN J
IPC: H01J7/18
CPC classification number: H01J7/183
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公开(公告)号:US2316127A
公开(公告)日:1943-04-06
申请号:US42207941
申请日:1941-12-08
Applicant: KING LAB INC
Inventor: KING ADEN J
IPC: H01J7/18
CPC classification number: H01J7/186
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公开(公告)号:US2706554A
公开(公告)日:1955-04-19
申请号:US28742152
申请日:1952-05-12
Applicant: KING LAB INC
Inventor: KING ADEN J
IPC: H01J7/18
CPC classification number: H01J7/183
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