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1.发明授权Metal sleeve ionization gauge having controlled spacing between grid and shield electrodes for optimization of sensitivity 失效用于优化感光度的网格和屏蔽电极之间的控制间隔的金属套管离子电位计
公开(公告)号：US3424936A
公开(公告)日：1969-01-28
申请号：US3424936D
申请日：1966-02-07
Applicant: NIPPON ELECTRIC CO
Inventor： ODA ZENJIRO , SAKAI TADASHI
CPC classification number: H01J41/06
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