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
CA704382A
Inventor
Armbruster Fritz
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.)
Diener and Roth
Original Assignee
Diener and Roth
Publication date
Application grantedgrantedCritical
Publication of CA704382ApublicationCriticalpatent/CA704382A/en