Patents by Inventor George Mallick, Jr.

George Mallick, Jr. 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).

  • Voltage comparator and indicating circuit
    Patent number: 4005365
    Abstract: A device including a voltage indicator circuit has the capability of indicating positive, neutral and negative voltages with respect to a reference voltage. Three indicator circuits are mounted on a single substrate. Each indicator circuit energizes a respective light emitting diode to indicate whether a voltage applied to a probe is positive, neutral or negative with respect to a reference voltage. The reference voltage is applied to a ground or reference terminal on the circuit. An alternating voltage is indicated by rendering effective all three light-emitting diodes. An open circuit can be ascertained by the absence of a positive signal from all the diodes.
    Type: Grant
    Filed: March 26, 1975
    Date of Patent: January 25, 1977
    Assignee: Western Electric Company, Inc.
    Inventors: Robert L. Berger, William H. Hailey, George Mallick, Jr., Donald H. Mannbeck, Wilber J. Weight