Patents by Inventor J. A. Grotehuis

J. A. Grotehuis 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).

  • Head-clamping device for surgical purposes
    Publication number: 20010029379
    Abstract: The present invention relates to a head-clamping device for surgical purposes, specifically for intra-operatively fixing the patient's head in any anatomically possible position, the center of rotation of the head clamp being in the cervical vertebral region of the patient.
    Type: Application
    Filed: March 5, 2001
    Publication date: October 11, 2001
    Applicant: THEO J.J. ZEGERS AND KURT DIETER VON ZEPPELIN
    Inventors: J. A. Grotehuis, Theo J.J. Zegers, Kurt Dieter Von Zeppelin