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Cascade solar heater
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Patent number 4,345,586
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Issue date Aug 24, 1982
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Julio A. Monjes
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F24 - HEATING RANGES VENTILATING
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Solar tracking device
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Patent number 4,304,221
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Issue date Dec 8, 1981
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Vulcan Australia Limited
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John M. Trihey
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F24 - HEATING RANGES VENTILATING
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2705948
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Patent number 2,705,948
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Issue date Apr 12, 1955
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F24 - HEATING RANGES VENTILATING
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1258405
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Patent number 1,258,405
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Issue date Mar 5, 1918
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F24 - HEATING RANGES VENTILATING