using discharge tubes only

Patents Grantslast 30 patents

  • Information Patent Grant

    Device for deposition of semi-conductor material

    • Patent number 4,102,298
    • Issue date Jul 25, 1978
    • Siemens Aktiengesellschaft
    • Wolfgang Dietze
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Three phase controlling system

    • Patent number 4,101,819
    • Issue date Jul 18, 1978
    • Hitachi, Ltd.
    • Yasuyuki Maeda
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Chopper assisted uninterruptible power supply

    • Patent number 4,065,711
    • Issue date Dec 27, 1977
    • Mitsubishi Denki Kabushiki Kaisha
    • Takao Kawabata
    • G01 - MEASURING TESTING
  • Information Patent Grant

    AC to DC power supply circuit

    • Patent number 4,051,425
    • Issue date Sep 27, 1977
    • Telephone Utilities and Communications Industries, Inc.
    • Jerry L. Smith
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Power control system for single phase induction melting or heating...

    • Patent number 4,037,044
    • Issue date Jul 19, 1977
    • Ajax Magnethermic Corporation
    • George Havas
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3927362

    • Patent number 3,927,362
    • Issue date Dec 16, 1975
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3906337

    • Patent number 3,906,337
    • Issue date Sep 16, 1975
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3889176

    • Patent number 3,889,176
    • Issue date Jun 10, 1975
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3821635

    • Patent number 3,821,635
    • Issue date Jun 28, 1974
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3723849

    • Patent number 3,723,849
    • Issue date Mar 27, 1973
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3651375

    • Patent number 3,651,375
    • Issue date Mar 21, 1972
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3530369

    • Patent number 3,530,369
    • Issue date Sep 22, 1970
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3527963

    • Patent number 3,527,963
    • Issue date Sep 8, 1970
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3514642

    • Patent number 3,514,642
    • Issue date May 26, 1970
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3441830

    • Patent number 3,441,830
    • Issue date Apr 29, 1969
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    3323014

    • Patent number 3,323,014
    • Issue date May 30, 1967
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    3323076

    • Patent number 3,323,076
    • Issue date May 30, 1967
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents