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Animal feeder
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Multiple compartment animal feeder
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Animal feeder
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Timed animal feeder
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Ambient light level detector including transient suppression circuitry
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Timed material-dispensing mechanism utilizing accumulation of a liquid
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Pumping apparatus
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Means for improving the water receiving and retaining characteristics of land
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Pumping equipment
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Pumping unit
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Combination pressure tank and pump
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Centrifugal pump
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Combination pressure tank and pump
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Automatic air volume control
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Automatic air volume control
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