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Priority claimed from JP62190117Aexternal-prioritypatent/JP2564839B2/en
Priority claimed from JP62287228Aexternal-prioritypatent/JPH0654925B2/en
Application filed by Nec CorpfiledCriticalNec Corp
Priority to SG153194ApriorityCriticalpatent/SG153194G/en
Publication of SG153194GpublicationCriticalpatent/SG153194G/en