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Priority claimed from JP10000286Uexternal-prioritypatent/JPH0353827Y2/ja
Priority claimed from JP19362186Uexternal-prioritypatent/JPH0341918Y2/ja
Application filed by Aida Eng LtdfiledCriticalAida Eng Ltd
Priority claimed from EP19870107689external-prioritypatent/EP0250871B1/de
Application grantedgrantedCritical
Publication of ATE55317T1publicationCriticalpatent/ATE55317T1/de