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公开(公告)号：US1236931A
公开(公告)日：1917-08-14
申请号：US1914848773
申请日：1914-07-03
Applicant: HENLEY LUTHER STRAUGHAN , KELLER FREDERICK ROWE
Inventor： HENLEY LUTHER STRAUGHAN , KELLER FREDERICK ROWE
CPC classification number: H02J3/14 , Y10T307/43 , Y10T307/438 , Y10T307/484
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