Priority Date: 24.09.12 (US 201213625016)

METHOD FOR INITIATING FLUID CIRCULATION USING DUAL DRILL PIPE

  • Application ID: EP13766924
  • Status: GRANT OF PATENT INTENDED

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Specialization

This patent has the IPC class E21 (EARTH OR ROCK DRILLING; MINING) is specialized in E21. Here you find a list of all patent agent firms which are specialized in this IPC class. For a similar patent, they might be a good choice.

Timeline

  • 24.09.2012 - Priority Date (US 201213625016)
  • 27.03.2014 - Publication A2 (WO2014044637)
  • 29.07.2015 - Publication A2 (EP2898178)

IPC Classification