Patent search ap:("GEN MOTORS CORP") AND inv:"TREPPA THOMAS J" Page 1

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发明授权
Method and means for testing welding equipment 失效
Title translation: 焊接设备测试方法和手段

公开(公告)号：US3389239A

公开(公告)日：1968-06-18

申请号：US34413564

申请日：1964-02-11

Applicant: GEN MOTORS CORP

Inventor： TREPPA THOMAS J , TRULSON FREDERICK J , ALLURED ROBERT B

IPC: G01N27/20 , G01R15/00

CPC classification number: G01N27/20 , G01R15/00

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