Patent search ap:("BELL TELEPHONE LABOR INC") AND inv:"ALMQUIST JR MILTON L" Page 1

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发明授权
Line scanner 失效

公开(公告)号：US2853553A

公开(公告)日：1958-09-23

申请号：US55591655

申请日：1955-12-28

Applicant: BELL TELEPHONE LABOR INC

Inventor： ALMQUIST JR MILTON L , JOEL JR AMOS E , MELVIN POSIN

IPC: H04M15/08 , H04Q3/00 , H04Q3/58

CPC classification number: H04Q3/0008 , H04M15/08 , H04Q3/58

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