16 Utility and 7 Design Patents
#36 in Burnsville, MN
#3,939 in Minnesota
#114,279 in US
#227,686 in the World
rank by utility patentsForward Citations = 684
Company Filing History:


Advanced Filtration Systems, Inc.
4. 2 out of 832,540 patents
Other
5. 1 out of 14
Catepillar Inc.
where one patent can have more than one assignee
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