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Dual belt furnace
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Patent number 5,242,156
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Issue date Sep 7, 1993
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Can-Eng Holdings, Ltd.
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John R. Kay
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C21 - METALLURGY OF IRON
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Rotary retort furnace
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Patent number 4,648,836
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Issue date Mar 10, 1987
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Can-Eng Holdings, Ltd.
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Terrence C. Thom
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C21 - METALLURGY OF IRON
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Lip-hung retort furnace
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Patent number 4,604,055
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Issue date Aug 5, 1986
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Can-Eng Holdings, Ltd.
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Peter B. Mackenzie
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C21 - METALLURGY OF IRON
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