TREA

Joseph N. Nelson

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  • Waterloo, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air filter restriction indicating device
    • Patent number 4,445,456
    • Issue date May 1, 1984
    • Engineered Products Company
    • Joseph N. Nelson
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Air filter restriction indicating device
    • Patent number 4,369,728
    • Issue date Jan 25, 1983
    • Engineered Products Company
    • Joseph N. Nelson
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS