TREA

Circuits for increasing the range of current supply source

Follow

Industry

  • CPC
  • H04M19/006
This industry / category may be too specific. Please go to a parent level for more data

Parent Industries

HELECTRICITY H04Electric communication H04MTELEPHONIC COMMUNICATION H04M19/00Current supply arrangements for telephone systems

Current Industry

H04M19/006Circuits for increasing the range of current supply source
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    DC distribution connection device
    • Patent number 10,390,416
    • Issue date Aug 20, 2019
    • SMK Corporation
    • Koichiro Ejiri
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Line powered loop extender with communications, control, and diagno...
    • Patent number 7,190,716
    • Issue date Mar 13, 2007
    • 2Wire, Inc.
    • Andrew L. Norrell
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Increasing gain with isolating upstream and downstream filters and...
    • Patent number 6,829,292
    • Issue date Dec 7, 2004
    • SymmetriCom, Inc.
    • Kishan Shenoi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Dual-slope current battery-feed circuit
    • Patent number 6,301,358
    • Issue date Oct 9, 2001
    • Avaya Technology Corp.
    • Robert K. Chen
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Automatic loss control circuit
    • Patent number 5,274,703
    • Issue date Dec 28, 1993
    • AT&T Bell Laboratories
    • Lance J. Haughton
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sealing current generator for a telephone circuit
    • Patent number 5,131,033
    • Issue date Jul 14, 1992
    • XEL Communications, Inc.
    • Peter M. Reum
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ground fault detector
    • Patent number 5,113,426
    • Issue date May 12, 1992
    • Fujitsu Limited
    • Kazumi Kinoshita
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Build out capacitor circuit
    • Patent number 4,607,140
    • Issue date Aug 19, 1986
    • Rockwell International Corp.
    • Ian A. Schorr
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Active network termination circuit
    • Patent number 4,607,141
    • Issue date Aug 19, 1986
    • Rockwell International Corporation
    • Ian A. Schorr
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Resistance detector with delayed hysteresis
    • Patent number 4,296,337
    • Issue date Oct 20, 1981
    • Bell Telephone Laboratories, Incorporated
    • Dale E. Stone
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Dial pulse detection
    • Patent number 4,289,933
    • Issue date Sep 15, 1981
    • Bell Telephone Laboratories, Incorporated
    • James L. Henry
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone loop resistance detector
    • Patent number 4,282,407
    • Issue date Aug 4, 1981
    • Bell Telephone Laboratories, Incorporated
    • Kenneth E. Stiefel
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone loop extending apparatus
    • Patent number 4,205,204
    • Issue date May 27, 1980
    • Richard W. Clenney
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone ringing extender
    • Patent number 4,144,408
    • Issue date Mar 13, 1979
    • Bell Telephone Laboratories, Incorporated
    • Roger E. Holtz
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loop extender
    • Patent number 4,130,735
    • Issue date Dec 19, 1978
    • Lorain Products Corporation
    • Charles W. Chambers
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Voltage boost circuit for telephone systems
    • Patent number 4,127,747
    • Issue date Nov 28, 1978
    • Northern Telecom Limited
    • Israel Levi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loop extender
    • Patent number 4,122,312
    • Issue date Oct 24, 1978
    • Cook Electric Company
    • Frederick J. Glenn
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone range extender with gain
    • Patent number 4,056,688
    • Issue date Nov 1, 1977
    • Bell Telephone Laboratories, Incorporated
    • Kenneth Erwin Stiefel
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Decoupling control arrangement for auxiliary circuits coupled to te...
    • Patent number 4,056,687
    • Issue date Nov 1, 1977
    • Western Electric Company
    • Robert Dennis Sims
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Range extender with gain
    • Patent number 4,054,941
    • Issue date Oct 18, 1977
    • Bell Telephone Laboratories, Incorporated
    • Harold Shichman
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Self-adjusting voice frequency repeater
    • Patent number 4,049,928
    • Issue date Sep 20, 1977
    • Northern Telecom Limited
    • Israel Levi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone line battery boost circuit
    • Patent number 4,024,351
    • Issue date May 17, 1977
    • Bell Telephone Laboratories, Incorporated
    • Edwin Coy Ingle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone line battery boost circuit
    • Patent number 3,992,591
    • Issue date Nov 16, 1976
    • Bell Telephone Laboratories, Incorporated
    • Edwin Coy Ingle
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3906162
    • Patent number 3,906,162
    • Issue date Sep 16, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3898389
    • Patent number 3,898,389
    • Issue date Aug 5, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3889066
    • Patent number 3,889,066
    • Issue date Jun 10, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3872258
    • Patent number 3,872,258
    • Issue date Mar 18, 1975
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3852536
    • Patent number 3,852,536
    • Issue date Dec 3, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3843844
    • Patent number 3,843,844
    • Issue date Oct 22, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3828139
    • Patent number 3,828,139
    • Issue date Aug 6, 1974
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents