Patents by Inventor Fredrick G. Strickland

Fredrick G. Strickland 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).

  • Bi-directional underwater communication system
    Patent number: 4336537
    Abstract: A bi-directional underwater communication system provides a submerged operator with the capability to communicate with a surface site. A face-mask-mounted microphone and an earphone are connected to a submerged, watertight radio. The radio antenna cable is carried by a buoy to the surface of the body of water in which the operator is submerged.
    Type: Grant
    Filed: December 17, 1980
    Date of Patent: June 22, 1982
    Inventor: Fredrick G. Strickland