Patents by Inventor Leon S. Wecker

Leon S. Wecker 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).

  • Electronic clock
    Patent number: 4026102
    Abstract: A numerical display unit formed by light emitting diode segments, is directly driven by the field effect transistors associated with an integrated timer circuit chip. A DC driving current is supplied to common electrodes of the transistors while the light emitting diodes are interconnected in a corresponding common electrode arrangement so that the same driving current is conducted through each of the transistors and associated light emitting diodes.
    Type: Grant
    Filed: March 18, 1975
    Date of Patent: May 31, 1977
    Assignee: Topp Electronics, Inc.
    Inventor: Leon S. Wecker
  • Electronic calendar system
    Patent number: 3975846
    Abstract: Methods and circuitry by which standard solid state, incadescent, or chemical alpha or numeric displays may be excited in proper sequence either from an A.M. or P.M. indicator, or any other electronic pulse, whether initially derived from an electrical or mechanical source, that appears one or more times during a 24 hour period.
    Type: Grant
    Filed: January 27, 1975
    Date of Patent: August 24, 1976
    Inventor: Leon S. Wecker