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Filter cartridge
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Patent number 5,935,284
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Issue date Aug 10, 1999
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Donaldson Company, Inc.
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Joseph C. Tokar
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Mist collector cartridge
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Patent number 5,871,557
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Issue date Feb 16, 1999
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Donaldson Company, Inc.
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Joseph C. Tokar
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Mist collector cartridge
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Patent number 5,415,676
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Issue date May 16, 1995
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Donaldson Company, Inc.
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Joseph C. Tokar
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Apparatus for filtering engine exhaust
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Patent number 5,246,472
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Issue date Sep 21, 1993
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Donaldson Company, Inc.
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John T. Herman
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Air cleaner with suspended cartridge
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Patent number 4,304,580
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Issue date Dec 8, 1981
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Donaldson Company, Inc.
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Warren G. Gehl
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Pleated fluid filter
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Patent number 4,151,095
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Issue date Apr 24, 1979
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Donaldson Company, Inc.
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Mervin E. Wright
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL