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David Meline Webb
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New Prague, MN, US
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last 30 patents
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Patent Grant
Filter medium and breather filter structure
Patent number
8,057,567
Issue date
Nov 15, 2011
Donaldson Company, Inc.
David M. Webb
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Multi-element filter arrangement and methods
Patent number
7,837,754
Issue date
Nov 23, 2010
Donaldson Company, Inc.
Philip Edward Johnson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Multi-element filter arrangement and methods
Patent number
7,597,734
Issue date
Oct 6, 2009
Donaldson Company, Inc.
Philip Edward Johnson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Patents Applications
last 30 patents
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Patent Application
MULTI-ELEMENT FILTER ARRANGEMENT AND METHODS
Publication number
20100006514
Publication date
Jan 14, 2010
Donaldson Company, Inc.
Philip Edward Johnson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
MULTI-ELEMENT FILTER ARRANGEMENT AND METHODS
Publication number
20060283160
Publication date
Dec 21, 2006
Philip Edward Johnson
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
FILTER MEDIUM AND BREATHER FILTER STRUCTURE
Publication number
20060242933
Publication date
Nov 2, 2006
David M. Webb
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL