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
CA861896A
Inventor
P. A. Neumann Frank
O. L. Wallen Emil
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.)
Cellwood Grubbens AB
Original Assignee
Grubbens and Co AB
Publication date
Application grantedgrantedCritical
Publication of CA861896ApublicationCriticalpatent/CA861896A/en