Patents by Inventor John D. Sublette

John D. Sublette 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).

  • Current regulated pulse dialer with memory retention circuit
    Patent number: 4527016
    Abstract: A current regulated pulse dialer circuit including a memory for storing predetermined sequences of telephone numbers, for use in a loop powered pulse dialing telephone. A first current source is connected to an electronic pulse dialer to provide a high impedance across the telephone line during transmission and interpulse pause conditions and a second current source is connected to an electronic pulse dialer to maintain the integrity of information stored in the memory portion of the dialer circuitry.
    Type: Grant
    Filed: August 25, 1983
    Date of Patent: July 2, 1985
    Assignee: GTE Business Communication Systems Inc.
    Inventor: John D. Sublette
  • Electronic tone ringer
    Patent number: 4309574
    Abstract: An electronic tone ringer for use in telephone substations. This circuit operates in response to conventional ringing signals and generates a single tone alert signal interrupted at a low frequency. The audible tone alert signal is generated by a piezo-ceramic transducer.
    Type: Grant
    Filed: April 15, 1980
    Date of Patent: January 5, 1982
    Assignee: GTE Automatic Electric Labs Inc.
    Inventors: John D. Sublette, William Stobbs
  • Current regulated pulse dialer circuit
    Patent number: 4286120
    Abstract: A current regulated pulse dialer circuit for use in a loop powered pulse dialing telephone. A current source is connected to an electronic pulse dialer to provide high impedance across a telephone line during transmission and interpulse pause conditions.
    Type: Grant
    Filed: October 15, 1979
    Date of Patent: August 25, 1981
    Assignee: GTE Automatic Electric Labs Inc.
    Inventor: John D. Sublette