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公开(公告)号：US2325952A
公开(公告)日：1943-08-03
申请号：US42250841
申请日：1941-12-11
Applicant: BELL TELEPHONE LABOR INC
Inventor： HAMPTON LEON N , SMITH GEORGE G
IPC: H02K21/18
CPC classification number: H02K21/185
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