TREA

Heinz-Dieter Brink

Follow

Person

  • Mattstetten, CH
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Drainage channel with locking grate
    • Patent number RE33439
    • Issue date Nov 13, 1990
    • Abt, Inc.
    • Roland Thomann
    • 404 - Road structure, process, or apparatus
  • Information Patent Grant

    Drainage channel with locking grate
    • Patent number 4,630,962
    • Issue date Dec 23, 1986
    • Roland Thomann
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Drainage channel
    • Patent number 4,621,939
    • Issue date Nov 11, 1986
    • Polydrain, Inc.
    • Roland Thomann
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES