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公开(公告)号：US1982805A
公开(公告)日：1934-12-04
申请号：US67388433
申请日：1933-06-01
Applicant: BELL TELEPHONE LABOR INC
Inventor： HAMPTON LEON N , DAVIS ROY W , RICHARD CHARLES D
IPC: B65G51/02
CPC classification number: B65G51/02
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