Patents by Inventor Robert Wohlfahrt

Robert Wohlfahrt 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 case formed from a disposable beverage can
    Patent number: 5502690
    Abstract: The present invention relates to a process for producing casings for time pieces and, more particularly, a process for producing casings from disposable metal containers for receiving watch movements and the resulting time pieces.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: March 26, 1996
    Assignee: Crash Holding AG
    Inventor: Robert Wohlfahrt
  • Process for producing a case for receiving a watchwork
    Patent number: 5479686
    Abstract: The present invention relates to a process for producing casings for time pieces and, more particularly, a process for producing casings from disposable metal containers for receiving watch movements and the resulting time pieces.
    Type: Grant
    Filed: January 6, 1994
    Date of Patent: January 2, 1996
    Assignee: Crash Holding AG
    Inventor: Robert Wohlfahrt