using as active elements electrochemical cells or galvano-magnetic or photo-electric elements

Patents Grantslast 30 patents

  • Information Patent Grant

    3913098

    • Patent number 3,913,098
    • Issue date Oct 14, 1975
    • G01 - MEASURING TESTING
  • Information Patent Grant

    3588717

    • Patent number 3,588,717
    • Issue date Jun 28, 1971
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3418652

    • Patent number 3,418,652
    • Issue date Dec 24, 1968
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3268733

    • Patent number 3,268,733
    • Issue date Aug 23, 1966
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    3129355

    • Patent number 3,129,355
    • Issue date Apr 14, 1964
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    3054031

    • Patent number 3,054,031
    • Issue date Sep 11, 1962
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2985872

    • Patent number 2,985,872
    • Issue date May 23, 1961
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2934654

    • Patent number 2,934,654
    • Issue date Apr 26, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2929956

    • Patent number 2,929,956
    • Issue date Mar 22, 1960
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2580672

    • Patent number 2,580,672
    • Issue date Jan 1, 1952
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2495790

    • Patent number 2,495,790
    • Issue date Jan 31, 1950
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2493534

    • Patent number 2,493,534
    • Issue date Jan 3, 1950
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2227037

    • Patent number 2,227,037
    • Issue date Dec 31, 1940
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    2126243

    • Patent number 2,126,243
    • Issue date Aug 9, 1938
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    2043800

    • Patent number 2,043,800
    • Issue date Jun 9, 1936
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    1951525

    • Patent number 1,951,525
    • Issue date Mar 20, 1934
    • H03 - BASIC ELECTRONIC CIRCUITRY