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
CA885818A
Inventor
C. Van De Meerendonk Gerardus
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.)
Nedschroef Octrooi Maatschappij NV
Original Assignee
Nedschroef Octrooi Maatschappij NV
Publication date
Application grantedgrantedCritical
Publication of CA885818ApublicationCriticalpatent/CA885818A/en