Patent search ap:("RCA CORP") AND inv:"JOHNSON FRED M" Page 1

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发明授权
Processing metal vapor tubes 失效
Title translation: 加工金属蒸汽管

公开(公告)号：US3290110A

公开(公告)日：1966-12-06

申请号：US24705962

申请日：1962-12-26

Applicant: RCA CORP

Inventor： JOHNSON FRED M

IPC: H01J9/38 , H01J45/00

CPC classification number: H01J45/00 , H01J9/38

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