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GB533886A
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Improvements in equipment for heat treatment of articles, particularly for the surface hardening of crankshafts and the like
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GB469383A
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Improvements in electric heating apparatus for use in the surface hardening of articles
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GB472310A
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Improvements relating to the surface hardening of articles
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GB475005A
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Improvements relating to the surface hardening of shafts
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GB481759A
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Improvements in or relating to surface hardening of hollow articles
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GB478109A
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Improvements relating to the surface hardening of articles
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GB480380A
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Improvements relating to the surface hardening of shafts and the like
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GB481618A
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Improvements relating to the surface hardening of shafts and the like
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GB479968A
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Improvements relating to the surface hardening of articles
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GB472099A
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Improvements relating to the surface hardening of articles
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GB485730A
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Control means for inductive heating apparatus
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GB485753A
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Improvements relating to the surface hardening of hollow metal articles
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GB485651A
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Improvements relating to surface hardening of metal articles
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GB485752A
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Improvements relating to electric heat treatment of metal articles
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GB485728A
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Improvements relating to heat treatment of metal articles
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GB472198A
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An improved method of and means for electric heat treatment of toothed gears and other articles
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GB485729A
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Improvements in or relating to electric induction heaters for the heat treatment of metal articles
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GB467882A
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An improved method and apparatus for the electric heat treatment of gears and other articles
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GB485455A
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Improvements relating to heat treatment of articles
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GB470539A
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Improvements relating to bearings
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