Light operated switches

Patents Grantslast 30 patents

  • Information Patent Grant

    Laser activated diffuse discharge switch

    • Patent number 4,743,807
    • Issue date May 10, 1988
    • The United States of America as represented by the United States Department o...
    • Loucas G. Christophorou
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Safety monitoring system for punch press operators

    • Patent number 4,621,300
    • Issue date Nov 4, 1986
    • Ray E. Summerer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Probe and system for detecting probe dislodgement

    • Patent number 4,295,475
    • Issue date Oct 20, 1981
    • Air Shields, Inc.
    • Terence A. Torzala
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    System for detecting probe dislodgement

    • Patent number 4,294,263
    • Issue date Oct 13, 1981
    • Air Shields, Inc.
    • Benjamin L. Hochman
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Device for the obtaining of an electric signal which is proportiona...

    • Patent number 4,292,630
    • Issue date Sep 29, 1981
    • Societe d'Etudes Techniques et Commerciales d'Automation
    • Claude Dumont
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Programmable non-duplication switching device

    • Patent number 4,084,140
    • Issue date Apr 11, 1978
    • Arvin Industries, Inc.
    • Jack D. Cauldwell
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    2136369

    • Patent number 2,136,369
    • Issue date Nov 15, 1938
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1999407

    • Patent number 1,999,407
    • Issue date Apr 30, 1935
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    1905059

    • Patent number 1,905,059
    • Issue date Apr 25, 1933
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    1819077

    • Patent number 1,819,077
    • Issue date Aug 18, 1931
    • G01 - MEASURING TESTING
  • Information Patent Grant

    1805966

    • Patent number 1,805,966
    • Issue date May 19, 1931
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    1756144

    • Patent number 1,756,144
    • Issue date Apr 29, 1930
    • G08 - SIGNALLING
  • Information Patent Grant

    1466885

    • Patent number 1,466,885
    • Issue date Sep 4, 1923
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents