Archelaius Dawson Allen

Person

  • Leyland, GB

Patents Grantslast 30 patents

  • Information Patent Grant

    Self-advancing mine roof supports

    • Patent number 4,102,140
    • Issue date Jul 25, 1978
    • Gullick Dobson Limited
    • Archelaius Dawson Allen
    • E21 - EARTH DRILLING MINING