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1.Apparatus for cutting annular wall elements of tubular bodies 失效
Title translation: 用于切割管状体的环形壁元件的装置公开(公告)号:US3130524A
公开(公告)日:1964-04-28
申请号:US15769261
申请日:1961-12-07
Applicant: EXXON RESEARCH ENGINEERING CO
Inventor: NELSON JEROME W , DE SAW FRED A
CPC classification number: B24B27/0616 , B23D47/08 , B23D47/10
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公开(公告)号:US3327274A
公开(公告)日:1967-06-20
申请号:US42274564
申请日:1964-12-31
Applicant: EXXON RESEARCH ENGINEERING CO
Inventor: NELSON JEROME W , DE SAW FRED A
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3.Strong-back clamping system for holding pipe joints during welding 失效
Title translation: 焊接时用于固定管接头的强后夹紧系统公开(公告)号:US3283115A
公开(公告)日:1966-11-01
申请号:US42262564
申请日:1964-12-31
Applicant: EXXON RESEARCH ENGINEERING CO
Inventor: NELSON JEROME W , DE SAW FRED A
IPC: B23K37/053
CPC classification number: B23K37/0531
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