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David Wallace Akerson

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  • St. Paul, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Non-combustible hardboard sheet
    • Patent number 4,072,558
    • Issue date Feb 7, 1978
    • Conwed Corporation
    • David W. Akerson
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Non-combustible hardboard sheet
    • Patent number 4,024,014
    • Issue date May 17, 1977
    • Conwed Corporation
    • David Wallace Akerson
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE