TREA

Allen D. Mathison

Follow

Person

  • Richfield, MN, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    External sealing cap for pipes
    • Patent number D379851
    • Issue date Jun 10, 1997
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Mechanical test plug for overflow and waste drains
    • Patent number D373623
    • Issue date Sep 10, 1996
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Small drain flushing expandable plug
    • Patent number D370055
    • Issue date May 21, 1996
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Pneumatic plug for pipelines
    • Patent number D362713
    • Issue date Sep 26, 1995
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling