Patents by Inventor George F. Krtous

George F. Krtous 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: 4216506
    Abstract: The present invention provides an improvement in a card reader type audio visual teaching device. The device employs a card handling mechanism for moving an information card which may contain both audio and visual information, across a record/playback transducing head. A dual track magnetic stripe on the information card carries instructor information or a question on one track to be audibly reproduced by the device which a student can hear through a speaker or preferably a set of headphones. A microphone permits a student to record an attempted repetition or response on the second track. The improvement comprises a multispeed card transport drive mechanism which permits either the student track or both the instructor track and the student track to be driven past the record/playback head at a substantially reduced rate. Additionally, the transport drive mechanism includes a repeat mechanism for returning the card to an initial position.
    Type: Grant
    Filed: January 12, 1978
    Date of Patent: August 5, 1980
    Assignee: Bell & Howell Company
    Inventors: Gerald W. Ludtke, Glenn A. Butler, George F. Krtous
  • Patent number: RE29159
    Abstract: A vertical record card can be held at selected levels in sound recording or reproduction association with a recorder-player adapted for cassette contained record tape.
    Type: Grant
    Filed: February 25, 1972
    Date of Patent: March 22, 1977
    Assignee: Bell & Howell Company
    Inventors: George F. Krtous, Carl G. Schreyer