Stephen F. Kral

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Madison, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Slush hydrogen production method and apparatus
- Patent number 6,758,046
- Issue date Jul 6, 2004
- Astronautics Corporation of America
- John A. Barclay
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
Information Patent Grant
Magnetic refrigeration apparatus for He II production
- Patent number 4,956,976
- Issue date Sep 18, 1990
- Astronautics Corporation of America
- Stephen F. Kral
- F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...