TREA

with toggle joint connection

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Industry

  • CPC
  • E21D15/08
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D15/00Props Chocks

Current Industry

E21D15/08with toggle joint connection
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    1835515
    • Patent number 1,835,515
    • Issue date Dec 8, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1653126
    • Patent number 1,653,126
    • Issue date Dec 20, 1927
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents