Patents by Inventor Percy L. Farrington

Percy L. Farrington 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).

  • Gas economizer
    Patent number: 3955835
    Abstract: A gas economizer which comprises a union for insertion in a gas line leading to a gas appliance with the male portion of the union provided with a plurality of spirally extending fins to cause a swirling action in the gas passing therethrough.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: May 11, 1976
    Inventor: Percy L. Farrington