Patent search ap:("SELAS CORP OF AMERICA") AND inv:"WILSON JR JOHN L" Page 1

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发明授权
Pipe forming 失效
Title translation: 管道成型

公开(公告)号：US3189992A

公开(公告)日：1965-06-22

申请号：US11548661

申请日：1961-06-07

Applicant: SELAS CORP OF AMERICA

Inventor： WILSON JR JOHN L

IPC: B21C37/08

CPC classification number: B21C37/08

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