Patents by Inventor Douglas Howard Strait

Douglas Howard Strait 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: 3939579
    Abstract: This disclosure is for an Audio-Visual training device having both a projectable film tape and an audio tape with control indicia on the audio tape in addition to recorded audio messages. The tape indicia are used to control a small processor which governs both tape and film movement. A keyboard on the device is used to enter replies to queries to a user from the tape and film and the processor will determine both tape and film movement in response to the answer to a query. The system is capable of multiway branching to present to the viewer the proper information pertaining to his answer. Several counters are available to count trials, correct or incorrect responses, etc., and to control tape and film movement in accordance with the counter readings. A proctor light may be turned on to call for personal assistance and to lock up the machine when a student is in trouble and the program does not have the proper branch to clear up the difficulty.
    Type: Grant
    Filed: December 28, 1973
    Date of Patent: February 24, 1976
    Assignee: International Business Machines Corporation
    Inventors: Lawrence Paul Andrews, Raymond Graham Fox, Clayton Potter Ludeman, Thomas Wilbur Rounds, Jr., Victor Anthony Scuderi, Douglas Howard Strait