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 JP1989060728UpriorityCriticalpatent/JPH0620273Y2/ja
Priority to US07/521,459prioritypatent/US5099095A/en
Priority to CA002016681Aprioritypatent/CA2016681C/en
Priority to DE4015619Aprioritypatent/DE4015619A1/de
Priority to GB9010858Aprioritypatent/GB2231725B/en
Publication of JPH02150737UpublicationCriticalpatent/JPH02150737U/ja
Application grantedgrantedCritical
Publication of JPH0620273Y2publicationCriticalpatent/JPH0620273Y2/ja
