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公开(公告)号:US3446490A
公开(公告)日:1969-05-27
申请号:US3446490D
申请日:1967-09-11
Applicant: SELAS CORP OF AMERICA
Inventor: KURZINSKI EDWARD F
CPC classification number: C21D9/0081 , B22D11/1213
公开(公告)号:US3446490A
公开(公告)日:1969-05-27
申请号:US3446490D
申请日:1967-09-11
Applicant: SELAS CORP OF AMERICA
Inventor: KURZINSKI EDWARD F
CPC classification number: C21D9/0081 , B22D11/1213