Michael T. Wardley

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Lymm, GB

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Patents Grantslast 30 patents

Information Patent Grant
Relating to rotary drill bits
- Patent number 4,942,933
- Issue date Jul 24, 1990
- Reed Tool Company, Ltd.
- John D. Barr
- E21 - EARTH DRILLING MINING
Information Patent Grant
Rotary drill bits
- Patent number 4,848,491
- Issue date Jul 18, 1989
- Reed Tool Company Limited
- Paul S. Burridge
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutting structures for rotary drill bits
- Patent number 4,781,256
- Issue date Nov 1, 1988
- NL Petroleum Products Limited
- Michael T. Wardley
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Cutter assemblies for rotary drill bits
- Patent number 4,705,122
- Issue date Nov 10, 1987
- NL Petroleum Products Limited
- Michael T. Wardley
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method of forming cutting structures for rotary drill bits
- Patent number 4,699,227
- Issue date Oct 13, 1987
- NL Petroleum Products Limited
- Michael T. Wardley
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Rotary drill bits and cutting elements for such bits
- Patent number 4,679,639
- Issue date Jul 14, 1987
- NL Petroleum Products Limited
- John D. Barr
- E21 - EARTH DRILLING MINING