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Priority to JP5519987UpriorityCriticalpatent/JPH062784Y2/ja
Priority to US07/143,915prioritypatent/US4960340A/en
Priority to DE3801674Aprioritypatent/DE3801674C2/de
Publication of JPS63160986UpublicationCriticalpatent/JPS63160986U/ja
Priority to US07/754,263prioritypatent/US5172996A/en
Application grantedgrantedCritical
Publication of JPH062784Y2publicationCriticalpatent/JPH062784Y2/ja