TREA

Charles V. Frederick

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  • New Virginia, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wall structure
    • Patent number 4,175,362
    • Issue date Nov 27, 1979
    • Charles V. Frederick
    • E04 - BUILDING
  • Information Patent Grant

    Wall panel
    • Patent number 4,136,495
    • Issue date Jan 30, 1979
    • Charles V. Frederick
    • E04 - BUILDING
  • Information Patent Grant

    Wall structure
    • Patent number 3,971,180
    • Issue date Jul 27, 1976
    • Charles V. Frederick
    • E04 - BUILDING