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Priority to JP1988021264UpriorityCriticalpatent/JPH0444293Y2/ja
Publication of JPH01128936UpublicationCriticalpatent/JPH01128936U/ja
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Publication of JPH0444293Y2publicationCriticalpatent/JPH0444293Y2/ja
Ceramic for moulds for producing fine mouldings - comprises magnesia-silica-magnesium phosphate with silicon carbide and/or silicon nitride to prevent vol. decrease during heating