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公开(公告)号：US3028622A
公开(公告)日：1962-04-10
申请号：US36946753
申请日：1953-07-21
Applicant: PLAX CORP
Inventor： PARK ROBERT H
CPC classification number: B29C59/08 , B29C59/085 , B29C2035/1658 , B29K2023/06
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