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2257358
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Information
Patent Grant
2257358
References
Source
Patent Number
2,257,358
Date Filed
Not available
Date Issued
Tuesday, September 30, 1941
83 years ago
CPC
F22B29/04 - of combined-circulation type, i.e. in which convection circulation due to the difference in specific gravity between cold and hot water is promoted by additional measures
US Classifications
122 - Liquid heaters and vaporizers
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