Patents by Inventor A. Fred Fedrigo

A. Fred Fedrigo 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).

  • Cam lock and method for making same
    Patent number: 3963360
    Abstract: A method for making a two-piece cam lock suited for locking a pair of telescopically interfitting poles together at a selected overall length.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: June 15, 1976
    Inventor: A. Fred Fedrigo
  • Swimming pool chlorinator
    Patent number: D242705
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: December 14, 1976
    Inventor: A. Fred Fedrigo