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公开(公告)号:US2987786A
公开(公告)日:1961-06-13
申请号:US73251858
申请日:1958-05-02
Applicant: WHITING CORP
Inventor: SMITH FRED T , DOLIN EDWARD T
IPC: B66C13/00
CPC classification number: B66C13/00 , B66C2700/017
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公开(公告)号:US3447697A
公开(公告)日:1969-06-03
申请号:US3447697D
申请日:1966-04-04
Applicant: WHITING CORP
Inventor: MOREY WOODRUFF A , MOLT RICHARD P , AMES VICTOR H , DOLIN EDWARD T
CPC classification number: B66F9/07
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公开(公告)号:US3348498A
公开(公告)日:1967-10-24
申请号:US46969665
申请日:1965-07-06
Applicant: WHITING CORP
Inventor: AMES VICTOR H , DOLIN EDWARD T
IPC: B61J3/04
CPC classification number: B61J3/04
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