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Hitachi Ltd
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Hitachi Ltd
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Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP148277ApriorityCriticalpatent/JPS5387168A/en
Publication of JPS5387168ApublicationCriticalpatent/JPS5387168A/en
PURPOSE: To prevent the occurrence of cracking in glass layers when leads are bent after sealing by providing the foam-form low melting point glass layers between insulation plates at the root parts of the leads protruding from the insulation plates.