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
CA611721A
Inventor
Frank D. Hoffman, Jr.
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.)
General Steel Products Co Inc Co
Original Assignee
General Steel Products Co Inc Co
Publication date
Application grantedgrantedCritical
Publication of CA611721ApublicationCriticalpatent/CA611721A/en