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Method for ammonia production
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Patent number 5,968,232
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Issue date Oct 19, 1999
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David R. Whitlock
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Separation system belt construction
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Patent number 5,819,946
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Issue date Oct 13, 1998
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Separation Technologies, Inc.
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David R. Whitlock
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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High tension electrostatic separators
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Patent number 4,325,820
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Issue date Apr 20, 1982
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Advanced Energy Dynamics, Inc.
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David R. Whitlock
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B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...