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Patents Grantslast 30 patents

Information Patent Grant
Horizontal directional drilling system
- Patent number 10,655,392
- Issue date May 19, 2020
- Cary Cooper
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bidirectional cluster hammer reamer
- Patent number 10,626,679
- Issue date Apr 21, 2020
- Cary Cooper
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hammer reamer for expanding a pilot bore
- Patent number 10,508,498
- Issue date Dec 17, 2019
- Cary Cooper
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hammer reamer for expanding a pilot bore
- Patent number 9,995,084
- Issue date Jun 12, 2018
- Cary Cooper
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
BIDIRECTIONAL CLUSTER HAMMER REAMER
- Publication number 20190301246
- Publication date Oct 3, 2019
- HARD ROCK HORIZONTAL DIRECTIONAL DRILLING PRODUCTS , INC.
- Cary Cooper
- E21 - EARTH DRILLING MINING
Information Patent Application
HAMMER REAMER FOR EXPANDING A PILOT BORE
- Publication number 20180266179
- Publication date Sep 20, 2018
- HARD ROCK HORIZONTAL DIRECTIONAL DRILLING PRODUCTS, INC.
- Cary Cooper
- E21 - EARTH DRILLING MINING
Information Patent Application
HORIZONTAL DIRECTIONAL DRILLING SYSTEM
- Publication number 20180073300
- Publication date Mar 15, 2018
- HARD ROCK HORIZONTAL DIRECTIONAL DRILLING PRODUCTS , INC.
- Cary Cooper
- E21 - EARTH DRILLING MINING