Patent search ap:("STANDARD TELEPHONES CABLES LTD") AND inv:"NORMAN HALL ROGER" Page 1

1.

发明授权
Electron discharge apparatus 失效

公开(公告)号：US2410054A

公开(公告)日：1946-10-29

申请号：US44550342

申请日：1942-06-02

Applicant: STANDARD TELEPHONES CABLES LTD

Inventor： HEAVER FREMLIN JOHN , NORMAN HALL ROGER

IPC: H01J23/10 , H01J25/08 , H01J25/10 , H01J29/64

CPC classification number: H01J25/08 , H01J23/10 , H01J25/10 , H01J29/64

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