Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"MARTINGANO GERALD A" Page 1

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发明授权
Teletypewriter switchboard 失效
Title translation: 电传开关柜

公开(公告)号：US3133152A

公开(公告)日：1964-05-12

申请号：US17833562

申请日：1962-03-08

Applicant: BELL TELEPHONE LABOR INC

Inventor： BACHELET ALBERT E , CROWSON FRED B , LARGE WAYNE V K , MARTINGANO GERALD A , PREVITE RICHARD A , REHM THEODORE C , SMITH TODD A

IPC: H04L12/00

CPC classification number: H04L12/00

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