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Douglas E. Flemming
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Rosemount, MN, US
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Patents Grants
last 30 patents
Information
Patent Grant
Muffler with catalytic converter arrangement; and method
Patent number
6,892,854
Issue date
May 17, 2005
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Muffler with catalytic converter arrangement, and method
Patent number
6,550,573
Issue date
Apr 22, 2003
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Muffler with catalytic converter arrangement; and method
Patent number
5,828,013
Issue date
Oct 27, 1998
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Muffler with catalytic converter arrangement; and method
Patent number
5,426,269
Issue date
Jun 20, 1995
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Muffler with catalytic converter arrangement; and method
Patent number
5,355,973
Issue date
Oct 18, 1994
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Diesel engine gas filter with electrical heater
Patent number
5,101,095
Issue date
Mar 31, 1992
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Electrical resistance heater
Patent number
5,053,603
Issue date
Oct 1, 1991
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Muffler apparatus with filter trap and method of use
Patent number
4,899,540
Issue date
Feb 13, 1990
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Apparatus for increasing regenerative filter heating element temper...
Patent number
4,878,928
Issue date
Nov 7, 1989
Donaldson Company, Inc.
Wayner M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Muffler apparatus with filter trap and method of use
Patent number
4,851,015
Issue date
Jul 25, 1989
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Apparatus and method for maintaining alternator output above predet...
Patent number
4,832,661
Issue date
May 23, 1989
Donaldson Company, Inc.
Wayne M. Wagner
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Grant
Apparatus for coupling tubular members
Patent number
4,790,574
Issue date
Dec 13, 1988
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Patents Applications
last 30 patents
Information
Patent Application
Muffler with catalytic converter arrangement; and method
Publication number
20050223703
Publication date
Oct 13, 2005
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Muffler with catalytic converter arrangement; and method
Publication number
20040031643
Publication date
Feb 19, 2004
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Application
Muffler with catalytic converter arrangement, and method
Publication number
20020040826
Publication date
Apr 11, 2002
Donaldson Company, Inc.
Wayne M. Wagner
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES