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公开(公告)号：US3469487A
公开(公告)日：1969-09-30
申请号：US3469487D
申请日：1967-10-04
Applicant: WHITNEY CORP W
Inventor： BROLUND THEODORE F
CPC classification number: B30B15/18 , B30B15/0052 , Y10T83/8696 , Y10T83/8858
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