Patents by Inventor Alfred M. Nardizzi

Alfred M. Nardizzi 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).

  • Electrocardiograph telemetry system including method and means for indicating inoperative conditions
    Patent number: 3953848
    Abstract: Special circuitry in the transmitter of an electrocardiograph (ECG) telemetry system detects various malfunctions of the system and changes the transmitted signal to indicate their presence to the system receiver. When the transmitter detects that an input electrode has become detached from the patient, it changes the frequency of the subcarrier signal to indicate this problem to the receiver. The receiver monitors the subcarrier frequency and flashes an alarm light when the frequency corresponds to the electrode inoperative condition.
    Type: Grant
    Filed: April 12, 1974
    Date of Patent: April 27, 1976
    Assignee: Hewlett-Packard Company
    Inventors: Richard F. Dillman, James L. Larsen, Alfred M. Nardizzi