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
CA854907A
Inventor
D'eustachio Dominic
Bygrave Robert
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.)
Pittsburgh Corning LLC
Original Assignee
Pittsburgh Corning LLC
Publication date
Application grantedgrantedCritical
Publication of CA854907ApublicationCriticalpatent/CA854907A/en