Patents by Inventor Ralph W. Crawford

Ralph W. Crawford 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).

  • Toy building
    Patent number: D248889
    Type: Grant
    Filed: December 9, 1976
    Date of Patent: August 8, 1978
    Assignee: The Quaker Oats Company
    Inventors: Duane E. Spengler, Ralph W. Crawford
  • Action toy
    Patent number: D255467
    Type: Grant
    Filed: December 9, 1977
    Date of Patent: June 17, 1980
    Assignee: The Quaker Oats Company
    Inventor: Ralph W. Crawford