Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"BERGHOLM JOSEPH O" Page 1

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发明授权
Synchronization of code systems 失效

公开(公告)号：US3509278A

公开(公告)日：1970-04-28

申请号：US3509278D

申请日：1967-09-27

Applicant: BELL TELEPHONE LABOR INC

Inventor： BERGHOLM JOSEPH O

IPC: H04J3/06 , H04L7/00 , H04L7/02 , H04L7/04 , H04L7/08 , H04B1/00

CPC classification number: H04L7/08 , H04J3/06 , H04L7/0066 , H04L7/046

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