Patents by Inventor Richard I. Fletcher

Richard I. Fletcher 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).

  • Fish conservation device
    Patent number: 4481904
    Abstract: This invention pertains to a fish conservation system for large water intake facilities, the system having one or more operating module. Each module includes a barrier screen or set of barrier screens and fish bypassing conduits located adjacent to the barrier screens. A reciprocating fish-herding screen or set of such reciprocating screens herds fish into the bypassing conduits and away from the barrier screens, against which the fish would otherwise be drawn and killed.
    Type: Grant
    Filed: June 28, 1983
    Date of Patent: November 13, 1984
    Inventor: Richard I. Fletcher