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公开(公告)号：US3519232A
公开(公告)日：1970-07-07
申请号：US3519232D
申请日：1968-10-03
Applicant: ACF IND INC
Inventor： HAMMONDS JAMES C , RANDOLPH ROBERT W
CPC classification number: F16B37/00 , B61D45/005 , Y10T74/18744
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