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公开(公告)号:US3559261A
公开(公告)日:1971-02-02
申请号:US3559261D
申请日:1968-11-20
申请人: WALTER J GREENLEAF
发明人: GREENLEAF WALTER J
CPC分类号: B23C5/2278 , B23C5/20 , Y10T407/192 , Y10T407/1932
摘要: PATENT 3,104,453 IS IMPROVED BY ARC WELDING THE BIT SEAT MEMBERS TO THE BODY AT AT LEAST TWO POINTS ON THE JUNCTIONS BETWEEN EACH BIT SEAT MEMBER AND THE BODY AND THE TRAILING SIDES OF THE SLOTS RECEIVING THE BIT SEAT MEMBER, THE POINTS BEING REMOTE FROM THE BIT SEATS.
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公开(公告)号:US3486211A
公开(公告)日:1969-12-30
申请号:US3486211D
申请日:1967-11-09
申请人: WALTER J GREENLEAF
发明人: GREENLEAF WALTER J
CPC分类号: B23C5/2278 , B23C5/207 , B23C2200/083 , B23C2200/085 , B23C2200/203 , B23C2200/205 , Y10T407/1924 , Y10T407/1932 , Y10T407/1936 , Y10T407/1942 , Y10T407/23
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公开(公告)号:US3323193A
公开(公告)日:1967-06-06
申请号:US51428565
申请日:1965-12-16
发明人: GREENLEAF WALTER J
IPC分类号: B23B29/034
CPC分类号: B23B29/0341 , Y10S408/713 , Y10T407/2224 , Y10T407/224 , Y10T407/227
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公开(公告)号:US3486210A
公开(公告)日:1969-12-30
申请号:US3486210D
申请日:1969-02-18
申请人: WALTER J GREENLEAF
发明人: GREENLEAF WALTER J
CPC分类号: B23C5/207 , B23C5/2278 , B23C2200/083 , B23C2200/085 , B23C2200/123 , B23C2200/125 , B23C2200/203 , B23C2200/205 , Y10T407/1934 , Y10T407/23
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