Patents Represented by Attorney Karl G. Henson

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  • Pair of welding helmet visor flanges
    Patent number: D524992
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: July 11, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Rutger Belin, Lennart C. Fredriksson, Jonas D. Fridholm, Oskar E. Juhlin, Niklas Lilenthal, Kjell I. Mases, David Crafoord