Patents by Inventor William B. Willis

William B. Willis 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).

  • Combined trash and ash receptacle
    Patent number: 3944110
    Abstract: Cigarette ashes and small trash particles are deposited and maintained in separate areas of a receptacle which is designed for use primarily in small areas as on restaurant dining tables.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: March 16, 1976
    Inventor: William B. Willis