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
CA685018A
Inventor
H. Berger John
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.)
Arthur G McKee and Co
Original Assignee
Arthur G McKee and Co
Publication date
Application grantedgrantedCritical
Publication of CA685018ApublicationCriticalpatent/CA685018A/en