Patents by Inventor Roberta J. David

Roberta J. David 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: D299665
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: January 31, 1989
    Inventor: Roberta J. David