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1869855
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Information
Patent Grant
1869855
References
Source
Patent Number
1,869,855
Date Filed
Not available
Date Issued
Tuesday, August 2, 1932
92 years ago
CPC
F24H3/06 - the air being kept separate from the heating medium
Y10S165/151 - having hollow blade
US Classifications
165 - Heat exchange
415 - Rotary kinetic fluid motors or pumps
416 - Fluid reaction surfaces
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