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.)
Priority date (The priority date 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 date listed.)
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Priority to JP1988114482UpriorityCriticalpatent/JPH0236166U/ja
Priority to US07/399,159prioritypatent/US5049458A/en
Priority to NO89893484Aprioritypatent/NO893484L/no
Priority to EP89115994Aprioritypatent/EP0357025A1/en
Priority to CA000609818Aprioritypatent/CA1309750C/en
Publication of JPH0236166UpublicationCriticalpatent/JPH0236166U/ja
