Michael E. Craghead

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Tempe, AZ, US

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Patents Grantslast 30 patents

Information Patent Grant
Automatic reversing mechanism for a rock drill
- Patent number 11,415,186
- Issue date Aug 16, 2022
- Kevin Hollander
- E21 - EARTH DRILLING MINING
Information Patent Grant
Stirling cycle refrigerator or engine employing the rotary wankel m...
- Patent number 6,109,040
- Issue date Aug 29, 2000
- General Pneumatics Corporation
- Woodrow R. Ellison
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Commandably actuated cryostat
- Patent number 6,082,119
- Issue date Jul 4, 2000
- General Pneumatics Corp.
- Woodrow R. Ellison
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents

Information Patent Application
Automatic Reversing Mechanism for a Rock Drill
- Publication number 20200332843
- Publication date Oct 22, 2020
- Augspurger Komm Engineering, Inc.
- Kevin Hollander
- E21 - EARTH DRILLING MINING