Patents by Inventor Dutro Blocksom

Dutro Blocksom 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).

  • Dispensing closure
    Patent number: D261992
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: November 24, 1981
    Assignee: The Procter & Gamble Company
    Inventors: Lyle B. Tuthill, Dutro Blocksom, Jr.
  • Bottle
    Patent number: D279261
    Type: Grant
    Filed: August 27, 1982
    Date of Patent: June 18, 1985
    Assignee: The Procter & Gamble Company
    Inventors: Dutro Blocksom, John C. DuPree
  • Bottle
    Patent number: D303630
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: September 26, 1989
    Assignee: The Procter & Gamble Company
    Inventors: Timothy J. Beechuk, Dutro Blocksom