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Process for helium recovery
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Patent number 5,080,694
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Issue date Jan 14, 1992
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Bergwerksverband GmbH
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Karl Knoblauch
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C01 - INORGANIC CHEMISTRY
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Gate valve
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Patent number 4,477,052
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Issue date Oct 16, 1984
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Bergwerksverband GmbH
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Karl Knoblauch
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Adsorptive separation of gases
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Patent number 4,415,340
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Issue date Nov 15, 1983
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Bergwerksverband GmbH
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Karl Knoblauch
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Manufacture of abrasion-resistant coke
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Patent number 4,233,117
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Issue date Nov 11, 1980
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Bergwerksverband GmbH
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Harald Juntgen
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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