Patents by Inventor Richard Ellwood Hansen

Richard Ellwood Hansen 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).

  • Keyboard module
    Patent number: D244863
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: June 28, 1977
    Assignee: Tektronix, Inc.
    Inventors: David Rolfe Smith, Richard Ellwood Hansen
  • Display module
    Patent number: D245025
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: July 12, 1977
    Assignee: Tektronix, Inc.
    Inventors: David Rolfe Smith, Richard Ellwood Hansen
  • Desk or similar article
    Patent number: D248706
    Type: Grant
    Filed: April 5, 1976
    Date of Patent: August 1, 1978
    Assignee: Tektronix, Inc.
    Inventors: David Rolfe Smith, Richard Ellwood Hansen