Patents by Inventor Marvin E. Gilbert

Marvin E. Gilbert 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 screen
    Patent number: 4182414
    Abstract: A water screen displaying a variable filtration feature is provided wherein the water screen comprises a pipe length made of a compressible plastic material. The pipe length is provided with a plurality of inlet openings thereby permitting fluid located peripheral to the exterior surface of the pipe length to be transported through the inlet openings and at the same time filtering particulate matter and debris from the water.
    Type: Grant
    Filed: August 12, 1977
    Date of Patent: January 8, 1980
    Inventors: Larry D. Sanders, Marvin E. Gilbert