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公开(公告)号:US3407351A
公开(公告)日:1968-10-22
申请号:US40179364
申请日:1964-10-06
Applicant: CSF
Inventor: DANIEL MAILLART
IPC: G01L21/00 , H01J41/04
CPC classification number: H01J41/04 , G01L21/00