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
CA875625A
Inventor
V. Digiulio Adolph
R. Williams David
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.)
Sinclair Koppers Co
Original Assignee
Sinclair Koppers Co
Publication date
Application grantedgrantedCritical
Publication of CA875625ApublicationCriticalpatent/CA875625A/en