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公开(公告)号：US2032905A
公开(公告)日：1936-03-03
申请号：US69799333
申请日：1933-11-14
Applicant: ALBERT BERCHTOLD
Inventor： ALBERT BERCHTOLD
CPC classification number: H05H1/0006 , B60C7/20 , G05D23/2033 , G05D23/2035 , H01J1/135
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