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Priority to JP1986113174UpriorityCriticalpatent/JPH053414Y2/ja
Priority to CA000542676Aprioritypatent/CA1279081C/en
Priority to US07/075,978prioritypatent/US4756948A/en
Priority to EP87306439Aprioritypatent/EP0254530B1/en
Priority to DE8787306439Tprioritypatent/DE3765488D1/de
Publication of JPS6318360UpublicationCriticalpatent/JPS6318360U/ja
Application grantedgrantedCritical
Publication of JPH053414Y2publicationCriticalpatent/JPH053414Y2/ja