Patent search ap:("NASA") AND inv:"MELFI LEONARD T JR" Page 1

1.

发明授权
Ionization vacuum gauge with all but the end of the ion collector shielded 失效
Title translation: 离子真空计与所有离子收集器的末端被屏蔽

公开(公告)号：US3466484A

公开(公告)日：1969-09-09

申请号：US3466484D

申请日：1967-04-27

Applicant: NASA

Inventor： CLAY FORREST P JR , MELFI LEONARD T JR

IPC: H01J41/04 , H01J7/16 , H01J13/28 , H01J17/24

CPC classification number: H01J41/04

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