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John C. Kliethermes

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  • Maplewood, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Retaining wall block and system
    • Patent number 5,537,796
    • Issue date Jul 23, 1996
    • John C. Kliethermes
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Sound block
    • Patent number 4,996,813
    • Issue date Mar 5, 1991
    • John C. Kliethermes
    • E04 - BUILDING

Patents Applicationslast 30 patents