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
CA632734A
Inventor
G. Foulke Donald
Kardos Otto
Koretzky Herman
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.)
Hanson Van Winkle Munning Co
Original Assignee
Hanson Van Winkle Munning Co
Publication date
Application grantedgrantedCritical
Publication of CA632734ApublicationCriticalpatent/CA632734A/en