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公开(公告)号：US1397842A
公开(公告)日：1921-11-22
申请号：US45389421
申请日：1921-03-21
Applicant: VELVET RUBBER COMPANY
Inventor： NETZEL FRANK M
IPC: B29D30/02
CPC classification number: B29D30/02 , Y10T152/10405
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