TREA

Raymond F. Lewandowski

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  • Mt. Prospect, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Snap action switch
    • Patent number 4,673,778
    • Issue date Jun 16, 1987
    • The Cherry Corporation
    • Raymond F. Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical appliance interlock switch
    • Patent number 4,529,852
    • Issue date Jul 16, 1985
    • Cherry Electrical Products Corporation
    • Raymond Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Electrical appliance interlock switch with force efficient actuator
    • Patent number 4,528,430
    • Issue date Jul 9, 1985
    • Cherry Electrical Products Corporation
    • Raymond Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Tactile feedback switch
    • Patent number 4,459,443
    • Issue date Jul 10, 1984
    • Cherry Electrical Products Corporation
    • Raymond Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Rotary switch
    • Patent number 4,348,569
    • Issue date Sep 7, 1982
    • Oak Industries Inc.
    • Bernard J. Golbeck
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Switch blade with wiping contact action
    • Patent number 4,277,662
    • Issue date Jul 7, 1981
    • Cherry Electrical Products Corp.
    • Raymond Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Hall effect linear motion switch
    • Patent number 4,061,988
    • Issue date Dec 6, 1977
    • Oak Industries Inc.
    • Raymond F. Lewandowski
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Hall effect rotary switch
    • Patent number 4,054,860
    • Issue date Oct 18, 1977
    • Oak Industries Inc.
    • Donald Max Henderson
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Rotary switch having a stator with a conductive matrix
    • Patent number 4,032,730
    • Issue date Jun 28, 1977
    • Oak Industries Inc.
    • Bernard J. Golbeck
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Keyboard switch
    • Patent number 4,016,388
    • Issue date Apr 5, 1977
    • Oak Industries Inc.
    • Bernard J. Golbeck
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Illuminated pushbutton switch
    • Patent number 4,002,873
    • Issue date Jan 11, 1977
    • Oak Industries Inc.
    • Raymond F. Lewandowski
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Pushbutton switch mechanism having block out members with common mo...
    • Patent number 3,952,175
    • Issue date Apr 20, 1976
    • Oak Industries Inc.
    • Bernard J. Golbeck
    • H01 - BASIC ELECTRIC ELEMENTS