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
CA796008A
Inventor
F. Wittenmyer Richard
Hodson Harry
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.)
Austin Co
Original Assignee
Austin Co
Publication date
Application grantedgrantedCritical
Publication of CA796008ApublicationCriticalpatent/CA796008A/en