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GB466685A
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Improvements in plate heat exchangers for fluids
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US2038855A
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Drying cylinder machine
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US1977921A
|
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Draining device
|
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GB393848A
|
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Improvements in control devices for hot water heating systems
|
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US1993685A
|
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Controlling device for heating systems
|
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GB368925A
|
|
Improvements in the utilization of impure vapours and gases for heating water and other fluids
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US1886590A
|
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Utilization of excess steam and hot gases
|
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US1758295A
|
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Steam-heated apparatus
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GB302903A
|
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Improved means for regulating the heating effect in apparatus heated with steam
|
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US1916073A
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Means for regulating the heat effect in apparatus heated indirectly with steam
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