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
CA670703A
Inventor
Bourguignon Jules-Jean
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.)
Baumgartner Freres SA
Original Assignee
Baumgartner Freres SA
Publication date
Application grantedgrantedCritical
Publication of CA670703ApublicationCriticalpatent/CA670703A/en