Charles Pierre Hallez

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Patents Grantslast 30 patents

Information Patent Grant
Threaded joint for drill rod elements
- Patent number 5,169,183
- Issue date Dec 8, 1992
- Diamant Boart Stratabit S.A.
- Charles P. Hallez
- E21 - EARTH DRILLING MINING
Information Patent Grant
Vertical gang saw apparatus
- Patent number 4,993,299
- Issue date Feb 19, 1991
- General Electric Company
- Charles P. Hallez
- B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
Information Patent Grant
Device for closing a core barrel installed in a drilling rig
- Patent number 4,887,676
- Issue date Dec 19, 1989
- Diamant Boart Societe Anonyme
- Charles P. Hallez
- E21 - EARTH DRILLING MINING
Information Patent Grant
Cutting arm
- Patent number 4,856,719
- Issue date Aug 15, 1989
- Diamant Boart
- Charles P. Hallez
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Device to control the locking of a boring corer
- Patent number 4,832,138
- Issue date May 23, 1989
- Diamant Boart S.A.
- Charles Pierre Hallez
- E21 - EARTH DRILLING MINING
Information Patent Grant
Surface-dressing rollertool
- Patent number 4,765,097
- Issue date Aug 23, 1988
- Diamant Boart Societe Anonyme
- Charles P. Hallez
- B24 - GRINDING POLISHING
Information Patent Grant
Circular saw for stony materials
- Patent number 4,718,398
- Issue date Jan 12, 1988
- Diamant Boart Societe Anonyme
- Charles P. Hallez
- B28 - WORKING CEMENT, CLAY, OR STONE