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公开(公告)号：US2924474A
公开(公告)日：1960-02-09
申请号：US69785357
申请日：1957-11-21
Applicant: SOUNDSCRIBER CORP
Inventor： LANGE MAX H
CPC classification number: E05C3/14 , E05B2015/0468 , Y10T292/0934
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