Patents Assigned to Unicon Incorporated
  • Compatibility circuit for telephone headset
    Patent number: 6408069
    Abstract: A selectable impedance matching circuit for matching the impedance of a telephone handset adapted for either a carbon microphone input or an electronic microphone input to the impedance of a headset microphone. The selectable impedance matching circuit includes a switch for connecting the headset microphone to the handset microphone input via a full wave bridge circuit, or connecting the headset microphone to the handset microphone input via an isolation transformer and resistor load.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: June 18, 2002
    Assignee: Unicon Incorporated
    Inventor: Jeffrey A. Furlong
  • Telephone headset ear loop
    Patent number: D420010
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: February 1, 2000
    Assignee: Unicon Incorporated
    Inventor: Matthew Pitel
  • Telephone headset ear hook
    Patent number: D421755
    Type: Grant
    Filed: February 17, 1999
    Date of Patent: March 21, 2000
    Assignee: Unicon Incorporated
    Inventor: Matthew Pitel