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3681566
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Information
Patent Grant
3681566
References
Source
Patent Number
3,681,566
Date Filed
Not available
Date Issued
Tuesday, August 1, 1972
51 years ago
CPC
F24H1/46 - Water heaters having plural combustion chambers
F24H1/225 - electrical central heating boilers
US Classifications
392 - Electric resistance heating devices
126 - Stoves and furnaces
219 - Electric heating
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