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Heating unit
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Patent number 4,718,601
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Issue date Jan 12, 1988
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Paul T. Chike
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F24 - HEATING RANGES VENTILATING
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Thermal storage furnace system
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Patent number 4,686,959
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Issue date Aug 18, 1987
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Electric Power Research Institute, Inc.
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Clarence L. Marksberry
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F24 - HEATING RANGES VENTILATING
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Heat storage units
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Patent number 4,345,639
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Issue date Aug 24, 1982
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Ti Creda Manufacturing Limited
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Richard J. Lane
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F24 - HEATING RANGES VENTILATING
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Heat storing fireplace
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Patent number 4,270,512
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Issue date Jun 2, 1981
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Robert E. Van Der Maas
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F24 - HEATING RANGES VENTILATING
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3885126
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Patent number 3,885,126
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Issue date May 20, 1975
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B60 - VEHICLES IN GENERAL
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3884295
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Patent number 3,884,295
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Issue date May 20, 1975
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F24 - HEATING RANGES VENTILATING
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3830288
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Patent number 3,830,288
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Issue date Aug 20, 1974
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F24 - HEATING RANGES VENTILATING
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3823305
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Patent number 3,823,305
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Issue date Jul 9, 1974
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F24 - HEATING RANGES VENTILATING
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3786232
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Patent number 3,786,232
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Issue date Jan 15, 1974
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F24 - HEATING RANGES VENTILATING
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3464486
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Patent number 3,464,486
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Issue date Sep 2, 1969
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F24 - HEATING RANGES VENTILATING
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3320724
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Patent number 3,320,724
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Issue date May 23, 1967
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F24 - HEATING RANGES VENTILATING
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3301251
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Patent number 3,301,251
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Issue date Jan 31, 1967
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F24 - HEATING RANGES VENTILATING
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3299945
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Patent number 3,299,945
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Issue date Jan 24, 1967
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F24 - HEATING RANGES VENTILATING