using discharge tubes only

Patents Grantslast 30 patents

  • Information Patent Grant

    3358209

    • Patent number 3,358,209
    • Issue date Dec 12, 1967
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3280334

    • Patent number 3,280,334
    • Issue date Oct 18, 1966
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2684461

    • Patent number 2,684,461
    • Issue date Jul 20, 1954
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2650340

    • Patent number 2,650,340
    • Issue date Aug 25, 1953
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2435187

    • Patent number 2,435,187
    • Issue date Feb 3, 1948
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2435189

    • Patent number 2,435,189
    • Issue date Feb 3, 1948
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2435188

    • Patent number 2,435,188
    • Issue date Feb 3, 1948
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2419464

    • Patent number 2,419,464
    • Issue date Apr 22, 1947
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2419466

    • Patent number 2,419,466
    • Issue date Apr 22, 1947
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2407072

    • Patent number 2,407,072
    • Issue date Sep 3, 1946
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2240201

    • Patent number 2,240,201
    • Issue date Apr 29, 1941
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2224645

    • Patent number 2,224,645
    • Issue date Dec 10, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2208182

    • Patent number 2,208,182
    • Issue date Jul 16, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2208183

    • Patent number 2,208,183
    • Issue date Jul 16, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2201873

    • Patent number 2,201,873
    • Issue date May 21, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2194966

    • Patent number 2,194,966
    • Issue date Mar 26, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2193603

    • Patent number 2,193,603
    • Issue date Mar 12, 1940
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2173121

    • Patent number 2,173,121
    • Issue date Sep 19, 1939
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2148384

    • Patent number 2,148,384
    • Issue date Feb 21, 1939
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2146571

    • Patent number 2,146,571
    • Issue date Feb 7, 1939
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2126523

    • Patent number 2,126,523
    • Issue date Aug 9, 1938
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2126604

    • Patent number 2,126,604
    • Issue date Aug 9, 1938
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2125097

    • Patent number 2,125,097
    • Issue date Jul 26, 1938
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2125115

    • Patent number 2,125,115
    • Issue date Jul 26, 1938
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2119377

    • Patent number 2,119,377
    • Issue date May 31, 1938
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2098079

    • Patent number 2,098,079
    • Issue date Nov 2, 1937
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2071190

    • Patent number 2,071,190
    • Issue date Feb 16, 1937
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2027235

    • Patent number 2,027,235
    • Issue date Jan 7, 1936
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2016628

    • Patent number 2,016,628
    • Issue date Oct 8, 1935
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    2013454

    • Patent number 2,013,454
    • Issue date Sep 3, 1935
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER