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Waste conveyor
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Patent number 5,611,290
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Issue date Mar 18, 1997
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Siemens Aktiengesellschaft
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Herbert Tratz
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Carbonization apparatus
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Patent number 5,409,577
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Issue date Apr 25, 1995
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Siemens Aktiengesellschaft
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Herbert Tratz
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Valve for shutting off a flow
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Patent number 4,770,390
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Issue date Sep 13, 1988
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Kraftwerk Union Aktiengesellschaft
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Herbert Tratz
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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