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1721336
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Information
Patent Grant
1721336
References
Source
Patent Number
1,721,336
Date Filed
Not available
Date Issued
Tuesday, July 16, 1929
95 years ago
CPC
F27D99/00 - Subject matter not provided for in other groups of this subclass
F27B17/0075 - Heating devices therefor
F27D2007/045 - Fans
US Classifications
417 - Pumps
110 - Furnaces
432 - Heating
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