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公开(公告)号：US3072968A
公开(公告)日：1963-01-15
申请号：US6615460
申请日：1960-10-31
Applicant: RUBBER AND PLASTICS RES ASS OF
CPC classification number: B29C35/025 , B29C47/00 , B29C47/0023 , B29K2021/00 , Y10S264/51 , Y10S425/02
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