Patents by Inventor Karl-Heinz Niederhoefer

Karl-Heinz Niederhoefer 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).

  • Telephone set
    Patent number: D294248
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: February 16, 1988
    Inventors: Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Wolfgang Girscher, Gerhard Sussner, Karl-Heinz Niederhoefer
  • Telephone set
    Patent number: D294351
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: February 23, 1988
    Inventors: Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Wolfgang Girscher, Gerhard Sussner, Karl-Heinz Niederhoefer
  • Telephone set
    Patent number: D297137
    Type: Grant
    Filed: July 28, 1986
    Date of Patent: August 9, 1988
    Inventors: Ludwig Richter, Dieter Kraemer, Helmut Mayer, Hajo von Reyer, Wolfgang Girscher, Gerhard Sussner, Karl-Heinz Niederhoefer