With Means For Magnified Reading (combinations With A Magnifying Glass In General Subclass 398) [g04b 39/00g] Patents (Class 968/372)
  • Magnification device for timepiece
    Patent number: 7274520
    Abstract: The device consists in compensating for the distortion of the characters marked on the dial caused by a lens, by writing the characters with a reverse pin cushion or barrel distortion.
    Type: Grant
    Filed: October 11, 2005
    Date of Patent: September 25, 2007
    Assignee: The Swatch Group Management Services AG
    Inventors: Yvan Ferri, Pascal Winkler