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GB892519A
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Improvements relating to heat treatment furnaces
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GB661982A
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Improvements in or relating to apparatus for extracting articles from a furnace
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US2531984A
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Roller unit for furnaces
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GB599942A
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Improvements in or relating to direction of wind indicating apparatus
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GB571423A
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Improvements in or relating to furnaces for the heat treatment of metals
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GB573287A
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Improvements in or relating to heat treatment furnaces
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GB566885A
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Improvements relating to electric furnaces of the salt bath type
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GB562297A
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Improvements relating to muffle furnaces
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GB555258A
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Improvements in or relating to installations for the heat treatment of metals and other materials
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GB557938A
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Improvements relating to quenching tanks for furnaces for the heat treatment of metal objects and the like
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GB554696A
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Improvements relating to the heat treatment of metallic material or articles
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GB554725A
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Improvements relating to furnaces for continuous heat treatment
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GB554726A
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Improvements relating to furnaces for heating metals and the like
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GB562162A
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Improvements relating to muffle furnaces
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GB548661A
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Improvements relating to apparatus for visually indicating the rotation of revolving shafts and the like
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GB530741A
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Improvements relating to the heat treatment of metals
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GB527293A
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Improvements relating to annealing metal alloys
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GB515227A
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Improvements relating to electric furnaces
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GB511846A
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Improvements relating to the heat treatment of metals and the like
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GB448522A
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Improvements in electric furnaces for melting metals
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