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
CA643499A
Inventor
Wollenhaupt Jakob
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.)
Gebr Honsberg GmbH
Original Assignee
Gebr Honsberg GmbH
Publication date
Application grantedgrantedCritical
Publication of CA643499ApublicationCriticalpatent/CA643499A/en