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Priority to JP5056383UpriorityCriticalpatent/JPS59155491U/ja
Publication of JPS59155491UpublicationCriticalpatent/JPS59155491U/ja
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Publication of JPS634939Y2publicationCriticalpatent/JPS634939Y2/ja
Flat,multi-luminal tube for cross-flow-type indirect heat exchanger,having greater outer wall thickness towards side externally subject to corrosive inlet gas such as wet,salty air