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US3651841A
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Saw tooth
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DE1081174B
|
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Firing for a flame tube smoke tube boiler designed as a heating tube standing boiler
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IE22395L
|
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Heating boiler
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GB812224A
|
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Improvements in or relating to steam generators or heating boilers
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IE22010L
|
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Furnaces
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GB797029A
|
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Improvements in or relating to furnaces of the cyclone type
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GB655992A
|
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Improvements in tobacco pipes
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GB621517A
|
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A process and apparatus for the operation of gas producers
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GB554857A
|
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Improved fuel combustion device
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GB470205A
|
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A method of, and means for, effecting fuel combustion in a furnace or the like
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