TREA

comprising two or more styli or transducers

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Industry

  • CPC
  • H04R11/10
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Parent Industries

HELECTRICITY H04Electric communication H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS DEAF-AID SETS PUBLIC ADDRESS SYSTEMS H04R11/00Transducers of moving-armature or moving-core type

Current Industry

H04R11/10comprising two or more styli or transducers
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Methods and devices for recording, engraving and reproducing modula...
    • Patent number 3,964,752
    • Issue date Jun 22, 1976
    • Andre Marie Bernard Charlin
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3088743
    • Patent number 3,088,743
    • Issue date May 7, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3088000
    • Patent number 3,088,000
    • Issue date Apr 30, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3087027
    • Patent number 3,087,027
    • Issue date Apr 23, 1963
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3047676
    • Patent number 3,047,676
    • Issue date Jul 31, 1962
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2955170
    • Patent number 2,955,170
    • Issue date Oct 4, 1960
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2926019
    • Patent number 2,926,019
    • Issue date Feb 23, 1960
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2917590
    • Patent number 2,917,590
    • Issue date Dec 15, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2868892
    • Patent number 2,868,892
    • Issue date Jan 13, 1959
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2820854
    • Patent number 2,820,854
    • Issue date Jan 21, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2820853
    • Patent number 2,820,853
    • Issue date Jan 21, 1958
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2563860
    • Patent number 2,563,860
    • Issue date Aug 14, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2554208
    • Patent number 2,554,208
    • Issue date May 22, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2554209
    • Patent number 2,554,209
    • Issue date May 22, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2553492
    • Patent number 2,553,492
    • Issue date May 15, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2545859
    • Patent number 2,545,859
    • Issue date Mar 20, 1951
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1835072
    • Patent number 1,835,072
    • Issue date Dec 8, 1931
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    1822932
    • Patent number 1,822,932
    • Issue date Sep 15, 1931
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE