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
CA706649A
Inventor
Uldry Andre
J. Roissard De Bellet Jean
Ackermann Ernest
Hoffer Maurice
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.)
Hoffco SA
Original Assignee
Hoffco SA
Publication date
Application grantedgrantedCritical
Publication of CA706649ApublicationCriticalpatent/CA706649A/en