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公开(公告)号：US2352765A
公开(公告)日：1944-07-04
申请号：US33778240
申请日：1940-05-29
Applicant: SQUARE D CO
Inventor： JOSEF BIERENFELD , MAECHTIEN LAWRENCE G
IPC: H01H50/64
CPC classification number: H01H50/643
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