Ewald H. Kurt

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Roanoke, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Percussion drill assembly
- Patent number 6,047,778
- Issue date Apr 11, 2000
- Dresser-Rand Company
- James E. Coffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drill assembly
- Patent number 5,957,220
- Issue date Sep 28, 1999
- Dresser-Rand Company
- James E. Coffman
- E21 - EARTH DRILLING MINING
Information Patent Grant
Modular cluster drill apparatus
- Patent number 5,174,390
- Issue date Dec 29, 1992
- Ingersoll-Rand Company
- Ewald H. Kurt
- E21 - EARTH DRILLING MINING
Information Patent Grant
Quick detach bit
- Patent number 4,953,640
- Issue date Sep 4, 1990
- Ewald H. Kurt
- E21 - EARTH DRILLING MINING
Information Patent Grant
Gang drill construction
- Patent number 4,729,439
- Issue date Mar 8, 1988
- Ingersoll-Rand Company
- Ewald H. Kurt
- E21 - EARTH DRILLING MINING
Information Patent Grant
Hydraulic reciprocating device
- Patent number 4,512,417
- Issue date Apr 23, 1985
- Ingersoll-Rand Company
- Ewald H. Kurt
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Fluid actuated impact tool
- Patent number 4,084,646
- Issue date Apr 18, 1978
- Ingersoll-Rand Company
- Ewald Heinz Kurt
- E21 - EARTH DRILLING MINING