Patents by Inventor Olin E. Liddell

Olin E. Liddell 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).

  • Method of and apparatus for telling time at night
    Patent number: 4512085
    Abstract: An instrument for telling time at night includes a base that has a central aperture for sighting on Polaris and an annular hour scale inscribed on the base with the axis of the aperture as the center of the annulus, a calendar scale rotatable on the base about said axis and having indicia adapted to be aligned with the indicia on the hour scale, and a pointer rotatable about said axis and arranged to be removably secured to the calendar scale with its indicating edge in alignment with a selected mark on the calendar scale.
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: April 23, 1985
    Inventor: Olin E. Liddell