TREA

Roger J. Lenkoff

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  • Louisville, KY, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Segmental toy game
    • Patent number 6,604,976
    • Issue date Aug 12, 2003
    • Stry-Lenkoff
    • Roger Lenkoff
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Combined sticker and invisible ink game
    • Patent number 6,152,449
    • Issue date Nov 28, 2000
    • Stry-Lenkoff Co.
    • Roger J. Lenkoff
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Greeting card with compatible puzzle message
    • Patent number 5,261,703
    • Issue date Nov 16, 1993
    • Stry-Lenkoff Company
    • Roger J. Lenkoff
    • B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
  • Information Patent Grant

    Puzzle game
    • Patent number 4,586,714
    • Issue date May 6, 1986
    • Stry-Lenkoff Co.
    • Leon G. Lenkoff
    • A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Segmental toy game
    • Publication number 20020077017
    • Publication date Jun 20, 2002
    • Roger Lenkoff
    • A63 - SPORTS GAMES AMUSEMENTS