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Priority to JP1988061956UpriorityCriticalpatent/JPH01170031U/ja
Priority to US07/347,300prioritypatent/US4969687A/en
Priority to DE3915029Aprioritypatent/DE3915029C2/de
Priority to FR8906185Aprioritypatent/FR2631291B1/fr
Priority to GB8910837Aprioritypatent/GB2218331B/en
Publication of JPH01170031UpublicationCriticalpatent/JPH01170031U/ja