Patent search ap:("NAT STEEL CORP") AND inv:"HEIST CHARLES H" Page 1

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发明授权
Metallurgical process 失效
Title translation: 冶金工艺

公开(公告)号：US2397262A

公开(公告)日：1946-03-26

申请号：US48114743

申请日：1943-03-30

Applicant: NAT STEEL CORP

Inventor： HEIST CHARLES H

IPC: C21B5/02 , C22C33/04

CPC classification number: C21B5/02 , C22C33/04

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