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GB494553A
|
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Improvements in heat exchange apparatus or recuperators suitable for heating air
|
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US1668968A
|
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Charging device for gas producers, shaft furnaces, and the like
|
|
GB271347A
|
|
Improvements in feeding arrangements for gas producers, shaft furnaces and the like
|
|
GB194602A
|
|
Improved means for pre-heating the air supplied to furnaces
|
|
GB141055A
|
|
Improvements in oil fired furnaces
|
|
GB141054A
|
|
Improvements in rocking furnaces
|
|
GB141056A
|
|
Improvements in rotary grates for furnaces
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