Patents by Inventor Clarence Bell

Clarence Bell 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).

  • Air filter and method of making same
    Patent number: 3992173
    Abstract: An air filter of the type having a porous filter medium body layer supported in a complementary unitary frame has a perforated panel supportingly engaging one face of the layer with folded up narrow panels along the edges of the layer, narrow retainer panels overlying the margins of the opposite face of the layer from the perforated panel, and each of the retainer panels being provided with spaced extensions which overlap adjacent the corners of the layer and are secured together as by means of adhesive, there also being anchoring adhesive securing two of the retainer panels to the filter layer. The overlapping extensions are perforated.An efficient method of making the air filter is provided.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: November 16, 1976
    Assignee: Korhumel Industries, Inc.
    Inventors: Charles E. Wharton, Clarence Bell
  • Air filter, or similar article
    Patent number: D244538
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: May 31, 1977
    Assignee: Korhumel Industries, Inc.
    Inventors: Charles E. Wharton, Clarence Bell