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公开(公告)号：US455686A
公开(公告)日：1891-07-07
申请号：US1891383213
申请日：1891-02-28
Applicant: HOPKINS JAMES M. , TESSEYMAN HENRY
Inventor： HOPKINS JAMES M. , TESSEYMAN HENRY
CPC classification number: E05B83/02 , Y10S24/31 , Y10T24/45089 , Y10T24/50 , Y10T292/319
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