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公开(公告)号:US2939942A
公开(公告)日:1960-06-07
申请号:US74912858
申请日:1958-07-17
Applicant: SMITH CORP A O
Inventor: SCHEIL MERRILL A
IPC: B23K9/173
CPC classification number: B23K9/173
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公开(公告)号:US3349593A
公开(公告)日:1967-10-31
申请号:US45224565
申请日:1965-04-30
Applicant: SMITH CORP A O
Inventor: SCHEIL MERRILL A
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公开(公告)号:US3210978A
公开(公告)日:1965-10-12
申请号:US19397462
申请日:1962-05-11
Applicant: SMITH CORP A O
Inventor: SCHEIL MERRILL A
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公开(公告)号:US2306912A
公开(公告)日:1942-12-29
申请号:US45472342
申请日:1942-08-13
Applicant: SMITH CORP A O
Inventor: SCHEIL MERRILL A
IPC: C21D1/46
CPC classification number: C21D1/46
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