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STEVEN G. TOLLEFSON
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MINERAL WELLS, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Sealing arrangement for apparatus for filtering, and methods, and p...
Patent number
9,566,543
Issue date
Feb 14, 2017
JONELL FILTRATION GROUP
Alan L. Clarke
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Wildlife protection guard for electrical power distribution equipment
Patent number
7,622,668
Issue date
Nov 24, 2009
Cantex, Inc.
Steve Tollefson
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Animal guard
Patent number
D595804
Issue date
Jul 7, 2009
Cantex, Inc.
Steve Tollefson
D22 - Arms, pyrotechnics, hunting and fishing equipment
Patents Applications
last 30 patents
Information
Patent Application
VARIABLE LENGTH FILTER ELEMENTS, APPARATUS COMPRISING SUCH FILTER E...
Publication number
20180345192
Publication date
Dec 6, 2018
JONELL FILTRATION PRODUCTS, INC.
ALAN L CLARKE
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHODS OF OPERATING A FILTERING APPARATUS
Publication number
20170151521
Publication date
Jun 1, 2017
ALAN L. CLARKE
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
SEALING ARRANGEMENT FOR APPARATUS FOR FILTERING, AND METHODS, AND P...
Publication number
20130055693
Publication date
Mar 7, 2013
Jonell filtration Products, Inc.
ALAN L. CLARKE
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL