8 Utility and 4 Design Patents
#623 in Minneapolis, MN
#8,183 in Minnesota
#254,065 in US
#519,767 in the World
rank by utility patentsForward Citations = 302
Company Filing History:


Russell Asset Management, Inc.
4. 1 out of 217

5. 1 out of 8
Ritchie Engineering Company, Inc.
where one patent can have more than one assignee
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