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公开(公告)号：US3537676A
公开(公告)日：1970-11-03
申请号：US3537676D
申请日：1967-12-20
Applicant: VALVE CORP OF AMERICA
Inventor： MILLER CHRISTIAN F
CPC classification number: B29C45/26 , B29C45/006 , B29C45/0081 , B29C45/2618 , B29C45/4407 , B29L2031/565
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