TREA

by electro-acoustic means

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Industry

  • CPC
  • G04C21/12
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Parent Industries

GPHYSICS G04Horology G04CELECTROMECHANICAL CLOCKS OR WATCHES G04C21/00Producing acoustic time signals by electrical means

Current Industry

G04C21/12by electro-acoustic means
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 11,604,438
    • Issue date Mar 14, 2023
    • Lutron Technology Company LLC
    • Erica Patton
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 10,732,575
    • Issue date Aug 4, 2020
    • Lutron Technology Company LLC
    • Erica Patton
    • G04 - HOROLOGY
  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 10,146,187
    • Issue date Dec 4, 2018
    • Lutron Electronics Co., Inc.
    • Erica Patton
    • G04 - HOROLOGY
  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 9,678,480
    • Issue date Jun 13, 2017
    • Lutron Electronics, Co., Inc.
    • Erica Patton
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 9,429,917
    • Issue date Aug 30, 2016
    • Lutron Electronics, Co., Inc.
    • Erica Patton
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Clock device with automatic simulation of sunrise or sunset
    • Patent number 9,195,220
    • Issue date Nov 24, 2015
    • Lutron Electronics Co., Inc.
    • Erica Patton
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Chronograph assembly
    • Patent number 9,164,490
    • Issue date Oct 20, 2015
    • William A. Fraser
    • G04 - HOROLOGY
  • Information Patent Grant

    Musical circle of fifths clock
    • Patent number 6,898,153
    • Issue date May 24, 2005
    • Victor Della Rossa
    • G04 - HOROLOGY
  • Information Patent Grant

    Electromechanical clock
    • Patent number 4,482,260
    • Issue date Nov 13, 1984
    • Kieninger & Obergfell
    • Wolfgang Fehrenbacher
    • G04 - HOROLOGY
  • Information Patent Grant

    Device for stopping the striking of a clock at night
    • Patent number 4,396,297
    • Issue date Aug 2, 1983
    • Rhythm Watch Co., Ltd.
    • Masahiro Akahane
    • G04 - HOROLOGY
  • Information Patent Grant

    Timed chime system
    • Patent number 4,270,200
    • Issue date May 26, 1981
    • Kienzle Uhrenfabriken GmbH
    • Helmut Stechmann
    • G04 - HOROLOGY
  • Information Patent Grant

    Time signal timepiece
    • Patent number 4,211,064
    • Issue date Jul 8, 1980
    • Kabushiki Kaisha Suwa Seikosha
    • Masayuki Ikeda
    • G04 - HOROLOGY
  • Information Patent Grant

    3210924
    • Patent number 3,210,924
    • Issue date Oct 12, 1965
    • G04 - HOROLOGY
  • Information Patent Grant

    2791146
    • Patent number 2,791,146
    • Issue date May 7, 1957
    • G04 - HOROLOGY
  • Information Patent Grant

    2744583
    • Patent number 2,744,583
    • Issue date May 8, 1956
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    2708337
    • Patent number 2,708,337
    • Issue date May 17, 1955
    • G04 - HOROLOGY
  • Information Patent Grant

    2604752
    • Patent number 2,604,752
    • Issue date Jul 29, 1952
    • G04 - HOROLOGY
  • Information Patent Grant

    2066041
    • Patent number 2,066,041
    • Issue date Dec 29, 1936
    • G04 - HOROLOGY
  • Information Patent Grant

    1977860
    • Patent number 1,977,860
    • Issue date Oct 23, 1934
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1905193
    • Patent number 1,905,193
    • Issue date Apr 25, 1933
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1871636
    • Patent number 1,871,636
    • Issue date Aug 16, 1932
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1545641
    • Patent number 1,545,641
    • Issue date Jul 14, 1925
    • G04 - HOROLOGY
  • Information Patent Grant

    299562
    • Patent number 299,562
    • Issue date Jun 3, 1884
    • G04 - HOROLOGY

Patents Applicationslast 30 patents