Patents by Inventor James C. Cramb

James C. Cramb 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).

  • Drawing apparatus
    Patent number: 4594792
    Abstract: Drawing apparatus is provided with a series of discs, each disc being located eccentrically and rotatable within another disc. The discs may be provided with cut-outs to enable shapes to be drawn on paper on which the drawing apparatus is placed. The perimeters of the discs are provided with reference points to enable the relative positions of one disc within another to be recorded, so that reproduction of patterns is possible by reference to the recordings of the relative positions.
    Type: Grant
    Filed: October 5, 1984
    Date of Patent: June 17, 1986
    Inventor: James C. Cramb