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Priority to JP1987082705UpriorityCriticalpatent/JPH0751441Y2/ja
Publication of JPS63192201UpublicationCriticalpatent/JPS63192201U/ja
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Publication of JPH0751441Y2publicationCriticalpatent/JPH0751441Y2/ja
Delayed release capsules having a permeable wall with a hole and containing fluid-expandable material which pushes out first an inert substance then a drug-containing material