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公开(公告)号：US904419A
公开(公告)日：1908-11-17
申请号：US1908441774
申请日：1908-07-03
Applicant: GASKILL ELIJAH THOMAS
Inventor： GASKILL ELIJAH THOMAS
CPC classification number: E05F11/00 , Y10T292/0815
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