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公开(公告)号：US3412869A
公开(公告)日：1968-11-26
申请号：US59599266
申请日：1966-11-21
Applicant: MINER INC W H
Inventor： WALLACE WILLIAM D , CARLSON ROBERT L , KENDALL GILES A
CPC classification number: B61G9/08 , F16F9/303 , F16F2224/025
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