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Solar heat system
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Patent number 4,269,229
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Issue date May 26, 1981
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Richdel, Inc.
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Myrl J. Saarem
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F24 - HEATING RANGES VENTILATING
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Solar heat system
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Patent number 4,191,166
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Issue date Mar 4, 1980
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Richdel, Inc.
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Myrl J. Saarem
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F24 - HEATING RANGES VENTILATING
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Timing valve control system
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Patent number 4,012,673
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Issue date Mar 15, 1977
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Richdel, Inc.
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Myrl J. Saarem
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H03 - BASIC ELECTRONIC CIRCUITRY