Patents by Inventor Ludwig Walser

Ludwig Walser 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).

  • Housing for an apparatus for cleaning soldering iron tips
    Patent number: D272309
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: January 24, 1984
    Assignee: Elvo Elektronik AG
    Inventor: Ludwig Walser
  • Elevator hall call panel
    Patent number: D283685
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: May 6, 1986
    Assignee: Inventio AG
    Inventor: Ludwig Walser
  • Hall indicator panel for elevators
    Patent number: D283686
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: May 6, 1986
    Assignee: Inventio AG
    Inventor: Ludwig Walser
  • Elevator car operating panel
    Patent number: D283687
    Type: Grant
    Filed: December 3, 1984
    Date of Patent: May 6, 1986
    Assignee: Inventio AG
    Inventor: Ludwig Walser
  • Valve actuator
    Patent number: D295280
    Type: Grant
    Filed: October 17, 1985
    Date of Patent: April 19, 1988
    Assignee: Georg Fischer Aktiengesellschaft
    Inventor: Ludwig Walser