Patents by Inventor Francis R. Keeler

Francis R. Keeler 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).

  • Water-recycling shower
    Patent number: 4893364
    Abstract: A water recycling shower wherein water once used in the showering process is held in a storage tank and recycled during a portion of the showering process in place of fresh water.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: January 16, 1990
    Inventor: Francis R. Keeler
  • Intrusion alarm
    Patent number: D243513
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: March 1, 1977
    Assignee: American District Telegraph Company
    Inventors: Aaron A. Galvin, Francis R. Keeler