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

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发明授权
Preferred customer communication system 失效
Title translation: 首选客户沟通系统

公开(公告)号：US3190966A

公开(公告)日：1965-06-22

申请号：US24124362

申请日：1962-11-30

Applicant: BELL TELEPHONE LABOR INC

Inventor： JAMES DONALD A , KENNEDY JAMES B , BURTON MCKIM , SHEPPARD HUBERT A

IPC: H04Q3/00

CPC classification number: H04Q3/0016

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