Patents by Inventor Irvin E. Chambers

Irvin E. Chambers 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).

  • Patent number: D393184
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: April 7, 1998
    Inventor: Irvin E. Chambers