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3769941
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Patent Grant
3769941
References
Source
Patent Number
3,769,941
Date Filed
Not available
Date Issued
Tuesday, November 6, 1973
50 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
F22B21/00 - Water-tube boilers of vertical or steeply-inclined type
US Classifications
122 - Liquid heaters and vaporizers
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