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公开(公告)号：US3376763A
公开(公告)日：1968-04-09
申请号：US50864565
申请日：1965-11-19
Applicant: HALLIBURTON CO
Inventor： WELLES CLIFFORD Y
CPC classification number: B23B29/03 , B23B51/048 , B23B2251/201 , B23B2251/56 , Y10S408/713 , Y10T407/2266 , Y10T407/227 , Y10T407/2274 , Y10T407/23 , Y10T407/28 , Y10T408/455 , Y10T408/89
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