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
CA603622A
Inventor
R. Collion Joseph
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.)
A NOTHELFER AND SOHNE
Original Assignee
A NOTHELFER AND SOHNE
Publication date
Application grantedgrantedCritical
Publication of CA603622ApublicationCriticalpatent/CA603622A/en