Patents by Inventor Per Jorgen Hovland

Per Jorgen Hovland 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).

  • Electric impulse transmitters for telephone instruments
    Patent number: 3973084
    Abstract: In a telephone subscriber's circuit with provision for push-button dialling using a circuit that is powered by line current, a transistor switch is provided in place of conventional impulsing contacts.
    Type: Grant
    Filed: January 14, 1975
    Date of Patent: August 3, 1976
    Inventor: Per Jorgen Hovland
  • Circuit arrangements in telephone apparatus
    Patent number: 3956596
    Abstract: A pushbutton telephone semiconductor dialling circuit power supply comprising a capacitor fed by a diode bridge placed in series with the line looping circuit during dialling. The capacitor size is chosen to charge to at least minimum circuit supply voltage during make periods of line looping, and to keep the circuit supplied during break periods. A constant current charging circuit may be employed to charge the capacitor from the bridge to improve performance, with a diode to power the circuit directly from the bridge while the capacitor is still charging.The microphone-bridging off-normal contacts may be replaced by a transistor switching circuit.
    Type: Grant
    Filed: April 10, 1974
    Date of Patent: May 11, 1976
    Assignee: The General Electric Company Limited
    Inventors: David Charles Antony Connolly, Per Jorgen Hovland, Robert Andrew Stevenson
  • Electric impulse transmitters for telephone instruments
    Patent number: 3932707
    Abstract: An electric circuit in an electric impulse transmitter which is responsive to the cessation of line current, except during loop-break impulses, to provide a clearing signal for storage circuits of said impulse transmitter.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: January 13, 1976
    Inventors: David Charles Anthony Connolly, Per Jorgen Hovland