Patents by Inventor Paul N. Gardner

Paul N. Gardner 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).

  • Methods and apparatus for measuring the thickness of wet films
    Patent number: 4169319
    Abstract: A gauge for measuring the thickness of a wet film on a surface comprises a circular disc having circumferentially spaced, calibrated notches around the outer periphery thereof. Finger grip elements are disposed at opposite sides of the disc and carry the disc for rotation relative thereto. The disc is rolled across the surface relative to the finger grip elements so that the notches are selectively wetted.
    Type: Grant
    Filed: September 6, 1978
    Date of Patent: October 2, 1979
    Assignee: Paul N. Gardner Company
    Inventor: Paul N. Gardner