Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"STAPLETON RICHARD J" Page 1

1.

发明授权
Telephone circuit using magnetic cores 失效
Title translation: 使用磁芯的电话电路

公开(公告)号：US2904636A

公开(公告)日：1959-09-15

申请号：US55467555

申请日：1955-12-22

Applicant: BELL TELEPHONE LABOR INC

Inventor： BURTON MCKIM , STAPLETON RICHARD J

IPC: G11C19/04 , H03K23/76 , H04Q3/42

CPC classification number: G11C19/04 , H03K23/76 , H04Q3/42

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