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公开(公告)号：US3509309A
公开(公告)日：1970-04-28
申请号：US3509309D
申请日：1966-12-13
Applicant: KAHLE ENG CO
Inventor： LINDSAY JAMES B , ENGEL WILLIAM T , BRENT GEORGE D
CPC classification number: B23K11/0026 , H01R43/02
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