Patents by Inventor Robert Wich

Robert Wich 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).

  • Method of making a shearfoil for dry shavers
    Patent number: 4192719
    Abstract: An apertured shearfoil is galvanically provided on its skin-contacting surface with collar-like protuberances surrounding the respective apertures.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: March 11, 1980
    Assignee: Braun AG
    Inventor: Robert Wich