Patents by Inventor Richard E. Jahnke

Richard E. Jahnke 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).

  • Test form for use with a test scoring apparatus
    Patent number: 4002888
    Abstract: A test form for use with a test scoring apparatus of the type for sensing the presence of indicia in answer indication areas on the test form. The test form includes a longitudinal column of timing marks positioned in relation to the answer indication areas to time the sensing of each answer indication area. The test form is characterized by the answer indication areas having enlarged dimensions so as to facilitate the use of the form by very young students and persons with less proficient motor skills.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: January 11, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Richard E. Jahnke