Patents by Inventor Fredrick W. Baum, Jr.

Fredrick W. Baum, Jr. 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).

  • Right angle measuring apparatus
    Patent number: 4575943
    Abstract: Apparatus for marking a reference line on a working surface at a predetermined angle or disposition from an established base line. Three tape measures each have a housing and a retractable tape extending therefrom. The free ends of each tape are connected to the housing of one of the other tape measures. The scales on the tapes may be varied from a predetermined norm for ease of reading the scales to determine an exact right angle.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: March 18, 1986
    Inventor: Fredrick W. Baum, Jr.