Patents by Inventor David O. Chase

David O. Chase 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).

  • Drafting table
    Patent number: D246215
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: November 1, 1977
    Inventors: Harry E. Riley, David O. Chase
  • Disposable lady's razor
    Patent number: D254992
    Type: Grant
    Filed: March 21, 1978
    Date of Patent: May 13, 1980
    Assignee: American Safety Razor Company
    Inventors: David O. Chase, Paul H. Pfuhl
  • Disposable razor
    Patent number: D260191
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: August 11, 1981
    Assignee: American Safety Razor Company
    Inventors: David O. Chase, Clemens A. Iten