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公开(公告)号：US1300769A
公开(公告)日：1919-04-15
申请号：US23278718
申请日：1918-05-06
Applicant: PIRTLE HOMER P
Inventor： PIRTLE HOMER P
CPC classification number: B29C73/10 , B29L2030/00 , Y10T152/10891
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