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Priority to JP18922784UpriorityCriticalpatent/JPH0223221Y2/ja
Publication of JPS61103044UpublicationCriticalpatent/JPS61103044U/ja
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Publication of JPH0223221Y2publicationCriticalpatent/JPH0223221Y2/ja
Safety mug for liquids with improved top which permits the liquid to retain its temperature while it is in the mug and further retain the liquid if the mug is bumped