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公开(公告)号：US3336080A
公开(公告)日：1967-08-15
申请号：US45761365
申请日：1965-05-21
Applicant: HECK LOUIS J , COX ROSS E
Inventor： HECK LOUIS J , COX ROSS E
IPC: B60P1/18
CPC classification number: B60P1/18
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