Patents by Inventor Bert W. Stewart

Bert W. Stewart 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).

  • Avian perch
    Patent number: 5315957
    Abstract: An avian perch for mounting in a bird cage having a plurality of bars comprises a length of natural fiber non-cotton rope and mounting hardware usable with any rope perch. The mounting hardware comprises a first and second end cap with a bolt extending therefrom, a pair of washers and a wing nut for attaching each end of the perch to the bars of a bird cage.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: May 31, 1994
    Inventors: Robert J. Garay, Bert W. Stewart