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US2006115A
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Operation of coke ovens and ovens therefor
|
|
US1943558A
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Regenerative oven
|
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US1967975A
|
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Regenerative coke oven with vertical heating flues
|
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US1868223A
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Regenerative coke oven
|
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GB259125A
|
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Improvements in or relating to pressed steel frames for rolls
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US1898267A
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Utilization of the perceptible heat of finished coke
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GB243721A
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An improved construction of fluted rolls for cutting grain
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US1759282A
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Washer
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GB234504A
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Process and apparatus for grinding grain into crushed meal and the like
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