Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"SEAFF JACK H" Page 1

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发明授权
Preparation of semiconductive materials for translating devices 失效
Title translation: 半导体材料的制备用于翻译装置

公开(公告)号：US2602763A

公开(公告)日：1952-07-08

申请号：US6789448

申请日：1948-12-29

Applicant: BELL TELEPHONE LABOR INC

Inventor： SEAFF JACK H , THEUERER HENRY C

IPC: C09B31/02 , H01L21/00

CPC classification number: C09B31/025 , H01L21/00 , Y10S117/90 , Y10S117/906 , Y10S438/909 , Y10S438/919 , Y10S438/925 , Y10S438/934

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