Robert Wayne Graham

Follow

Person

Whitman, VA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Mine equipment recovery system
- Patent number 8,905,487
- Issue date Dec 9, 2014
- Robert Wayne Graham
- E21 - EARTH DRILLING MINING
Information Patent Grant
Material and equipment recovery system
- Patent number 8,783,784
- Issue date Jul 22, 2014
- Logan Hydraulics Co.
- Robert Wayne Graham
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MINE EQIPMENT RECOVERY SYSTEM
- Publication number 20130104768
- Publication date May 2, 2013
- Robert Wayne Graham
- E21 - EARTH DRILLING MINING
Information Patent Application
MATERIAL AND EQUIPMENT RECOVERY SYSTEM
- Publication number 20130049435
- Publication date Feb 28, 2013
- Robert Wayne Graham
- E21 - EARTH DRILLING MINING