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Cryogenic refrigeration apparatus
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Patent number 5,345,769
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Issue date Sep 13, 1994
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Boreas, Inc.
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Anthony G. Liepert
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Cryogenic refrigeration apparatus
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Patent number 5,099,650
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Issue date Mar 31, 1992
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Boreas Inc.
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James A. Crunkleton
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Cryogenic refrigeration apparatus
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Patent number 4,862,694
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Issue date Sep 5, 1989
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Massachusetts Institute of Technology
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James A. Crunkleton
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...