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Electrostatic spray gun
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Patent number 4,489,893
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Issue date Dec 25, 1984
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Caterpillar Tractor Co.
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Robert G. Smead
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Electrodynamic painting system and method
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Patent number 4,343,828
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Issue date Aug 10, 1982
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Caterpillar Tractor Co.
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Robert G. Smead
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Electrostatic spray apparatus
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Patent number 4,258,655
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Issue date Mar 31, 1981
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Caterpillar Tractor Co.
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Thomas L. Bagby
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
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Electrostatic coating system
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Patent number 4,158,344
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Issue date Jun 19, 1979
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Caterpillar Tractor Co.
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Thomas L. Bagby
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B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...