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1989169
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Information
Patent Grant
1989169
References
Source
Patent Number
1,989,169
Date Filed
Not available
Date Issued
Tuesday, January 29, 1935
89 years ago
CPC
F23H9/02 - Revolving cylindrical grates
F23L1/02 - by discharging the air below the fire
F23H2700/005 - Rotary grates with vertical axis
US Classifications
110 - Furnaces
126 - Stoves and furnaces
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