Patent search ap:("INT STANDARD ELECTRIC CORP") AND inv:"TREVOR WATTS ALBERT" Page 1

1.

发明授权
Indirectly heated cathodes 失效
Title translation: 间接加热阴极

公开(公告)号：US2749470A

公开(公告)日：1956-06-05

申请号：US35467453

申请日：1953-05-13

Applicant: INT STANDARD ELECTRIC CORP

Inventor： ALFRED BILLINGS WILLIAM , WILLIAM WRIGHT WALTER , TREVOR WATTS ALBERT

IPC: H01J1/20

CPC classification number: H01J1/20

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