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
CA742846A
Inventor
Van Der Lely Cornelis
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.)
Patent Concern NV
Original Assignee
Patent Concern NV
Publication date
Application grantedgrantedCritical
Publication of CA742846ApublicationCriticalpatent/CA742846A/en