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
CA634857A
Inventor
Graf Felix
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.)
Joh Jacob Rieter und Cie AG
Original Assignee
Joh Jacob Rieter und Cie AG
Publication date
Application grantedgrantedCritical
Publication of CA634857ApublicationCriticalpatent/CA634857A/en