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
CA593630A
Inventor
F. Lauener Wilhelm
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.)
KELLVER AG
Original Assignee
KELLVER AG
Publication date
Application grantedgrantedCritical
Publication of CA593630ApublicationCriticalpatent/CA593630A/en