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Process for cryogenic air separation
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Patent number 5,076,823
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Issue date Dec 31, 1991
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Air Products and Chemicals, Inc.
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James G. Hansel
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Argon purification
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Patent number 5,019,145
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Issue date May 28, 1991
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Linde Aktiengesellschaft
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Wilhelm Rohde
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Production of high purity argon
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Patent number 4,983,194
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Issue date Jan 8, 1991
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Air Products and Chemicals, Inc.
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Jeffrey A. Hopkins
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Process for the production of crude argon
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Patent number 4,932,212
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Issue date Jun 12, 1990
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Linde Aktiengesellschaft
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Wilhelm Rohde
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3928004
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Patent number 3,928,004
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Issue date Dec 23, 1975
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3127260
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Patent number 3,127,260
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Issue date Mar 31, 1964
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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3123457
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Patent number 3,123,457
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Issue date Mar 3, 1964
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2982107
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Patent number 2,982,107
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Issue date May 2, 1961
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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2784572
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Patent number 2,784,572
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Issue date Mar 12, 1957
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...