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公开(公告)号：US3291202A
公开(公告)日：1966-12-13
申请号：US30146263
申请日：1963-08-12
Applicant: MACHLETT LAB INC
Inventor： AGULE GEORGE J , ALFRED L EPLATTENIER
IPC: H01J19/36
CPC classification number: H01J19/36 , H01J2893/0027
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