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Daniel J. Grondal

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  • Bethel, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus and method of indirectly illuminating a sign
    • Patent number 6,026,602
    • Issue date Feb 22, 2000
    • Prolume, Inc.
    • Daniel J. Grondal
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Indirectly illuminated sign
    • Patent number 5,542,201
    • Issue date Aug 6, 1996
    • Prolume, Inc.
    • Daniel J. Grondal
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Indirectly illuminated sign
    • Patent number 5,428,912
    • Issue date Jul 4, 1995
    • Prolume Incorporated
    • Daniel J. Grondal
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    LED exit light fixture
    • Patent number 5,299,109
    • Issue date Mar 29, 1994
    • High Lites, Inc.
    • Daniel Grondal
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS