Patents by Inventor Gilbert F. Saber

Gilbert F. Saber 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).

  • Trigonometric slide rule
    Patent number: 5084609
    Abstract: The invention relates to an improved slide rule type of apparatus that provides visual solutions to trigonometric problems. The invention provides a cheaper to make and easier to read trigonometric slide rule.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: January 28, 1992
    Inventor: Gilbert F. Saber