Patents by Inventor Bobby W. Hanna

Bobby W. Hanna 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).

  • Safety electrical receptacle and plug therefor
    Patent number: 4179180
    Abstract: An interlocking electrical connector comprising a receptacle with a pair of arcuate slots with a U-shape and having a prong-receiving opening at one end and electrical contacts at the other end and a plug-in connector with a pair of corresponding U-shaped electrical prongs.
    Type: Grant
    Filed: May 15, 1978
    Date of Patent: December 18, 1979
    Inventor: Bobby W. Hanna