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Slow release coolant filter
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Patent number RE37369
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Issue date Sep 18, 2001
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Fleetguard, Inc.
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R. Douglas Hudgens
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210 - Liquid purification or separation
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Slow release coolant filter
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Patent number 5,772,873
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Issue date Jun 30, 1998
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Fleetguard, Inc.
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R. Douglas Hudgens
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Slow release coolant filter
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Patent number 5,662,799
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Issue date Sep 2, 1997
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Fleetguard, Inc.
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R. Douglas Hudgens
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES