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Self-cleaning screw conveyor
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Patent number 4,330,032
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Issue date May 18, 1982
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Koppelman; Edward
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Edward Koppelman
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F28 - HEAT EXCHANGE IN GENERAL
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Filter apparatus
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Patent number 4,220,458
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Issue date Sep 2, 1980
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KGM Associates
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Edward Koppelman
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Radially staged drag turbine
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Patent number 4,201,512
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Issue date May 6, 1980
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Cerla N.V.
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Chester W. Marynowski
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F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
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Continuous thermal reactor
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Patent number 4,106,999
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Issue date Aug 15, 1978
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Koppelman; Edward
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Edward Koppelman
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C01 - INORGANIC CHEMISTRY
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