Patents by Inventor William C. Farmer

William C. Farmer 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 producing high quality photographs on microfiche
    Patent number: 4153456
    Abstract: There is disclosed a method for producing improved quality photographs on microfilm and improved quality diazo microfiche duplicates. A negative half-tone image of a real world subject is produced on a photosensitive medium. A negative of that image is then formed on microfilm, such negative being a positive half-tone image of the real world subject. Diazo duplicates are then made, if desired, using the negative image (positive half-tone image of the real world subject) on the microfilm as the master.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: May 8, 1979
    Assignee: High Point, Incorporated
    Inventor: William C. Farmer