Patents by Inventor James K. Michael

James K. Michael 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 apparatus
    Patent number: 5077904
    Abstract: A drafting apparatus comprising a drawing board having at least two opposite, parallel sides, and arcuate guide means, detachably coupled to the at least two opposite, parallel sides, for guiding a straight edge along a radial path during formation of radiating perspective lines.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: January 7, 1992
    Inventor: James K. Michael