TREA

Norbert Leopoldi

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  • Chicago, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Attachment for turning door knobs
    • Patent number D320923
    • Issue date Oct 22, 1991
    • The Cloverline, Inc.
    • Norbert Leopoldi
    • D08 - Tools and hardware
  • Information Patent Grant

    Helically-shaped earring
    • Patent number D308348
    • Issue date Jun 5, 1990
    • The Cloverline, Inc.
    • Norbert Leopoldi
    • D11 - Jewelry, symbolic insignia, and ornaments
  • Information Patent Grant

    Lever adapter for door knobs
    • Patent number D295605
    • Issue date May 10, 1988
    • The Cloverline, Inc.
    • Norbert Leopoldi
    • D08 - Tools and hardware
  • Information Patent Grant

    Magnifying EKG reader or the like
    • Patent number D285699
    • Issue date Sep 16, 1986
    • The Cloverline, Inc.
    • Norbert Leopoldi
    • D16 - Photography and optical equipment