Patents by Inventor Herbert Stratmann

Herbert Stratmann 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).

  • Drilling device for drilling plates susceptible to breaking
    Patent number: 4730420
    Abstract: A drilling machine for drilling holes in glass panes includes an annular support and an annular pressing member aligned opposite each other along a path of movement of the drill bit. The support and the pressing member are swingably mounted relative to the axis of the drill bit and are made preferably as inner rings of a ball and socket joint.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: March 15, 1988
    Assignee: Benteler-Werke AG
    Inventors: Herbert Stratmann, Joachim Korswird, Uwe Werner