TREA

Cliff Harper

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  • Calgary, Alberta, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Activity kit
    • Patent number 4,836,783
    • Issue date Jun 6, 1989
    • Cliff Harper
    • B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
  • Information Patent Grant

    Foldable trailer
    • Patent number 4,786,073
    • Issue date Nov 22, 1988
    • Cliff Harper
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS