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1521773
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Patent Grant
1521773
References
Source
Patent Number
1,521,773
Date Filed
Not available
Date Issued
Tuesday, January 6, 1925
99 years ago
CPC
F26B11/185 - the drum provided with internal subdivisions or multiple walls
US Classifications
034 - Drying and gas or vapor contact with solids
454 - Ventilation
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