Patents by Inventor Shirly L. Graham

Shirly L. Graham 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).

  • Squirrel proof shaped bird feeder with dung shield
    Patent number: 5207180
    Abstract: An improved depending bird feeder container, having a dung shield suspended over the bird feeder container and having the container formed to a special shape, similar to a "bell" shaped substantially cylindrical walled housing or container of a specific minimum diameter at the top or suspended portion of the container and a flare of a minimum length. This shape defeats squirrels and similar animals from climbing down the outside of the feeder container.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: May 4, 1993
    Inventor: Shirly L. Graham