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Priority to JP1987171274UpriorityCriticalpatent/JPH0176354U/ja
Priority to US07/263,649prioritypatent/US4909540A/en
Priority to EP88118746Aprioritypatent/EP0315989B1/en
Priority to DE8888118746Tprioritypatent/DE3875067T2/de
Publication of JPH0176354UpublicationCriticalpatent/JPH0176354U/ja