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.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP1988050387UpriorityCriticalpatent/JPH01152854U/ja
Priority to CA000595802Aprioritypatent/CA1323648C/en
Publication of JPH01152854UpublicationCriticalpatent/JPH01152854U/ja
Priority to US07/666,486prioritypatent/US5099612A/en
Priority to US07/858,654prioritypatent/US5240664A/en
