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公开(公告)号:US2954551A
公开(公告)日:1960-09-27
申请号:US72765558
申请日:1958-04-10
Applicant: BELL TELEPHONE LABOR INC
Inventor: DOUCETTE EDWARD I , GRUBBS JR WILLIAM J
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公开(公告)号:US3021459A
公开(公告)日:1962-02-13
申请号:US5002960
申请日:1960-08-16
Applicant: BELL TELEPHONE LABOR INC
Inventor: GRUBBS JR WILLIAM J , HINES MARION E , VARNERIN JR LAWRENCE J
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公开(公告)号:US2927283A
公开(公告)日:1960-03-01
申请号:US73086958
申请日:1958-04-25
Applicant: BELL TELEPHONE LABOR INC
Inventor: GRUBBS JR WILLIAM J
IPC: H03H7/00
CPC classification number: H03H7/002
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