H ELECTRICITY
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H05 ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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H05B ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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1/00 Details of electric heating devices
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H05B1/02 Automatic switching arrangements specially adapted to apparatus; ; Control of heating devices;
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H05B1/0227 Applications
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H05B1/023 Industrial applications
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