Patents by Inventor R. Gregory Plimpton

R. Gregory Plimpton 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).

  • Pool thermometer
    Patent number: 4738549
    Abstract: A thermometer adapted for immersion in a liquid includes a monolithic casing matrix. A plurality of liquid crystal display portions are embedded in the casing matrix. The liquid crystal display portions each have a liquid crystal agent with an optically perceivable condition at a temperature or temperature range. Indicia of the temperature or temperature ranges can also be provided.
    Type: Grant
    Filed: April 3, 1986
    Date of Patent: April 19, 1988
    Inventor: R. Gregory Plimpton