Patents by Inventor Ben Joseph Friedman

Ben Joseph Friedman 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).

  • Patent number: 4074445
    Abstract: Method and apparatus for constructing and grading objective examinations wherein the answers are recorded on answer sheets by darkening pre-selected spaces corresponding to the selected answer. A template is placed on the answer sheet, the template having pre-punched holes which yield a plurality of answer patterns depending on the template orientation. Indicia are provided for indicating the appropriate answer pattern yielded by the template in each given orientation. To construct an examination, question sheets are provided having spaces for questions and spaces for a plurality of possible answers with a disappearable or removable indicium juxtaposed adjacent the position for the correct answer. The pattern of the removable indicium on each particular question sheet blank corresponds to the pattern of holes of the template in one of its pre-determined orientations.
    Type: Grant
    Filed: March 24, 1975
    Date of Patent: February 21, 1978
    Inventor: Ben Joseph Friedman