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Priority claimed from JP63029243Aexternal-prioritypatent/JPH0730920B2/en
Priority claimed from JP63029242Aexternal-prioritypatent/JPH0670488B2/en
Priority claimed from JP63298702Aexternal-prioritypatent/JPH0731553B2/en
Application filed by Koatsu Gas Hoan Kyokai, Matsushita Electric Ind Co LtdfiledCriticalKoatsu Gas Hoan Kyokai
Priority to SG112694ApriorityCriticalpatent/SG112694G/en
Publication of SG112694GpublicationCriticalpatent/SG112694G/en