Patents by Inventor Hans Sielemann

Hans Sielemann 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).

  • Grinding machine
    Patent number: 4209950
    Abstract: A grinding machine having a rotatable grinding head formed of a circular array of grinding segments including means for conducting liquid coolant thereto, with a blocking member for interrupting flow of coolant to regions of the grinding head not in contact with a workpiece being machined.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: July 1, 1980
    Inventor: Hans Sielemann