Patents by Inventor Keith A. Main

Keith A. Main 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).

  • Sign bracket
    Patent number: 4433935
    Abstract: A sign bracket for attaching a sign to a stand particularly useful for supporting two cross members to which a flexible sign is attached. The bracket includes a sleeve which slidably overfits a vertical stand member and includes a resilient latch which permits the sleeve to be located at various vertical positions on the stand. The sleeve is affixed to a pair of sign holding mechanisms forming a channel having an open end which receives a sign cross member and having a resilient latch member located at the channel open end which restrains the cross member within the channel.
    Type: Grant
    Filed: June 17, 1981
    Date of Patent: February 28, 1984
    Assignee: Marketing Displays, Inc.
    Inventors: Keith A. Main, David U. Hillstrom