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GB665968A
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A method of manufacturing tools
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GB655906A
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Arrangement for continuous heating, in a hardening process, of cylindrical metal articles by induced currents
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GB642292A
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A method and device for concentrated heating by induction currents
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US2586577A
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Dynamoelectric power measuring cutoff
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GB649868A
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Means for controlling an adjustable amount of electrical energy
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GB655693A
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Improvements in or relating to electron discharge devices with an outer anode
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US2518090A
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Electron discharge device
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GB633045A
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Improvements relating to heating heads for heating articles by induced electric current
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GB641194A
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Devices for the heating of work-pieces by induced high frequency currents
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US2452401A
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Method of regeneration of electron discharge devices
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US2486504A
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Device for repeated frequent starting and stopping of oscillation generators
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GB639470A
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A device for repeated starting and stopping of an oscillation generator
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GB650723A
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A method of repairing electron discharge devices
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GB624545A
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Improvements in heat treatment of wire
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GB640155A
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Improvements in and relating to electronic discharge devices
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GB630623A
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An improved method of and device for hardening articles by high frequency currents
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GB636127A
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Improvements in and relating to ferro-magnetic cores for high frequency machines andapparatus
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GB640252A
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Improved method of sealing metal vessels of electronic discharge devices
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US2466565A
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Discharge device with an outer anode
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US2540700A
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Method and device for hardening of articles by high-frequency currents
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