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公开(公告)号：US3466765A
公开(公告)日：1969-09-16
申请号：US3466765D
申请日：1968-01-17
Applicant: GEN MOTORS CORP
Inventor： BERNOTAS RALPH J , FISHER JAMES W , SCOTT ROBERT H
CPC classification number: E02F3/6472 , E02F3/64 , E02F3/655 , E02F3/656
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