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Priority to JP1988102474UpriorityCriticalpatent/JPH064316Y2/ja
Priority to US07/381,284prioritypatent/US4989455A/en
Priority to GB8916564Aprioritypatent/GB2222862B/en
Priority to DE3924462Aprioritypatent/DE3924462C2/de
Publication of JPH0224357UpublicationCriticalpatent/JPH0224357U/ja
Application grantedgrantedCritical
Publication of JPH064316Y2publicationCriticalpatent/JPH064316Y2/ja