Patents by Inventor Hanspeter Grädel

Hanspeter Grädel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Watch having a fluid-tight rotary crystal or crystal-bezel unit
    Patent number: 5521889
    Abstract: The crystal-bezel unit (1, 20) allows dismantling of the timepiece from above and can be moved rotatingly relative to a caseband (4), where a joining gasket (10) including at least one active portion is disposed between the crystal-bezel unit and the caseband. An optional fixing means (20) holds the fixed and rotating units together.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: May 28, 1996
    Assignee: Walca SA
    Inventors: Renato Scarinzi, Alfred Joss, Hanspeter Gradel
  • Watchcase
    Patent number: D464574
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: October 22, 2002
    Assignee: Formex Watch SA
    Inventor: Hanspeter Grädel
  • Wristwatch case
    Patent number: D327020
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: June 16, 1992
    Assignee: Lucien Rochat SA
    Inventor: Hanspeter Gradel
  • Watch case
    Patent number: D333621
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: March 2, 1993
    Assignee: Lucien Rochat SA
    Inventor: Hanspeter Gradel