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公开(公告)号:US3027550A
公开(公告)日:1962-03-27
申请号:US63153156
申请日:1956-12-31
Applicant: BELL TELEPHONE LABOR INC
Inventor: LEE ROBERT C , YOSTPILLE JOHN J
IPC: H04Q3/42
CPC classification number: H04Q3/42
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公开(公告)号:US2965887A
公开(公告)日:1960-12-20
申请号:US52968655
申请日:1955-08-22
Applicant: BELL TELEPHONE LABOR INC
Inventor: YOSTPILLE JOHN J
IPC: H04Q3/00
CPC classification number: H04Q3/00
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公开(公告)号:US2892184A
公开(公告)日:1959-06-23
申请号:US49372155
申请日:1955-03-11
Applicant: BELL TELEPHONE LABOR INC
Inventor: JOEL JR AMOS E , YOSTPILLE JOHN J
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公开(公告)号:US2794970A
公开(公告)日:1957-06-04
申请号:US51977155
申请日:1955-07-05
Applicant: BELL TELEPHONE LABOR INC
Inventor: YOSTPILLE JOHN J
IPC: G11C21/00
CPC classification number: G11C21/00
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