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
CA798385A
Inventor
J. Dittrich Ferdinand
N. Longo Frank
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.)
Metco Inc
Original Assignee
Metco Inc
Publication date
Application grantedgrantedCritical
Publication of CA798385ApublicationCriticalpatent/CA798385A/en