John J. Slomkowski

Person

  • Bethpage, NY, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Device for displaying numbers

    • Patent number 3,972,139
    • Issue date Aug 3, 1976
    • Large Scale Readouts, Inc.
    • John J. Slomkowski
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS