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1799039
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Patent Grant
1799039
References
Source
Patent Number
1,799,039
Date Filed
Not available
Date Issued
Tuesday, March 31, 1931
94 years ago
CPC
F28D21/0008 - Air heaters
Y10S165/308 - Coaxial impellers
US Classifications
165 - Heat exchange
126 - Stoves and furnaces
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