Abram Simeon Lance

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Boones Mill, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Down-the-hole drill hammer having a roller ramp clutch
- Patent number 10,024,103
- Issue date Jul 17, 2018
- Center Rock Inc.
- Leland H. Lyon
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWN-THE-HOLE DRILL HAMMER HAVING A ROLLER RAMP CLUTCH
- Publication number 20160222732
- Publication date Aug 4, 2016
- CENTER ROCK INC.
- Leland H. Lyon
- E21 - EARTH DRILLING MINING