Patents by Inventor Thomas Quirinus Maria Preijde

Thomas Quirinus Maria Preijde 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).

  • Device for performing equilibrium exercises
    Patent number: 5895363
    Abstract: The invention relates to a device for performing equilibrium exercises which includes a fitting assembly for fitting the device to a part of the body, for instance the head, of a user and a position indicating assembly connected to the fitting assembly for indicating the position of the device. The position indicating assembly is herein observable by the user and can be formed by a conventional or electronic spirit level instrument.
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: April 20, 1999
    Inventor: Thomas Quirinus Maria Preijde