TREA

Esa Karru

Follow

Person

  • Tampere, FI
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic drilling apparatus
    • Patent number 4,355,691
    • Issue date Oct 26, 1982
    • Oy Tampella AB
    • Esa Karru
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic percussion apparatus
    • Patent number 4,343,227
    • Issue date Aug 10, 1982
    • Oy Tampella AB
    • Esa Karru
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS