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
CA638818A
Inventor
Biel Hans
Pfaffle Ernst
Bertsch 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.)
Hans Sickinger Co
Original Assignee
Hans Sickinger Co
Publication date
Application grantedgrantedCritical
Publication of CA638818ApublicationCriticalpatent/CA638818A/en