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 JP1988142253UpriorityCriticalpatent/JPH0262659U/ja
Priority to US07/410,335prioritypatent/US4937152A/en
Priority to CA000612842Aprioritypatent/CA1306494C/en
Priority to NO89893805Aprioritypatent/NO893805L/no
Priority to EP89117737Aprioritypatent/EP0361383A1/en
Publication of JPH0262659UpublicationCriticalpatent/JPH0262659U/ja
