Patent search ap:("SIEMENS AG") AND inv:"SCHAAL ALFRED" Page 1

1.

发明授权
Method and apparatus for welding and checking tubular workpieces 失效
Title translation: 焊接和检查管状工件的方法和装置

公开(公告)号：US3444351A

公开(公告)日：1969-05-13

申请号：US3444351D

申请日：1966-06-08

Applicant: SIEMENS AG

Inventor： STEHLE HEINZ , KADEN WERNER , SCHAAL ALFRED

IPC: B23K9/00 , G01N23/18 , B23K9/12 , B23K9/16 , B23K31/02

CPC classification number: B23K9/00 , G01N23/18

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