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Priority to JP12098687UpriorityCriticalpatent/JPH056259Y2/ja
Priority to FI881141Aprioritypatent/FI94405C/fi
Priority to US07/167,788prioritypatent/US4838171A/en
Priority to KR1019880002680Aprioritypatent/KR880011001A/ko
Publication of JPS6426623UpublicationCriticalpatent/JPS6426623U/ja
Priority to KR2019900017776Uprioritypatent/KR910000937Y1/ko
Priority to KR2019900020048Uprioritypatent/KR910001388Y1/ko
Application grantedgrantedCritical
Publication of JPH056259Y2publicationCriticalpatent/JPH056259Y2/ja