Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA590854A
Inventor
T. Watson Thomas
Riggall Albert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lukens Steel Co
Original Assignee
Lukens Steel Co
Publication date
Application grantedgrantedCritical
Publication of CA590854ApublicationCriticalpatent/CA590854A/en