Patents by Inventor Michel Ehrhart

Michel Ehrhart 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).

  • Incremental coder
    Patent number: D329839
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: September 29, 1992
    Assignee: Hohner Automation Societe Anonyme
    Inventor: Michel Ehrhart
  • Incremental coder
    Patent number: D354476
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: January 17, 1995
    Assignee: Hohner Automation, Societe Anonyme
    Inventor: Michel Ehrhart