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公开(公告)号：US861022A
公开(公告)日：1907-07-23
申请号：US1906331126
申请日：1906-08-18
Applicant: DUNMIRE JAMES W
Inventor： DUNMIRE JAMES W
CPC classification number: D06F13/02 , Y10T74/18504 , Y10T74/18768 , Y10T74/19516
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