Patents by Inventor David A. Pietrowski

David A. Pietrowski 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 and apparatus for data acquisition
    Patent number: 5218535
    Abstract: A method and apparatus 10 is disclosed for displaying a sequence of questions, for soliciting answers to these questions, for receiving the answers, and for storing the answers for later analysis. This methodology and apparatus 10 includes the use of a keypad which may be generated upon a display 18 by use of a timing interrupt signal, emanating from an operating system 66. This keypad may also be moved to several predetermined positions upon display 18.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: June 8, 1993
    Inventor: David A. Pietrowski