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GB995168A
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Improvements in or relating to high-tension transformers
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DE1413462A1
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Magnetic circuit for transformers with ceramic insulation and method for producing the magnetic circuit
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GB958753A
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Method and arrangement for the electric resistance flash-butt welding of steels
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DE1222183B
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Automatic hydraulic control device for an electric flash butt welding machine
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GB953681A
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Hydraulic clamping apparatus
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DE1205210B
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Hydraulic welding press for electrical resistance welding with control device for the pressure program in a press cylinder
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GB995872A
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Hydraulic welding press for electric resistance welding with means controlling programmed course of press in pressing cylinder
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BE615835A
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Sliding regulator for determining two consecutive pressures in hydraulic machines
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DE1148010B
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Cooling of an electrical generator for increased frequency
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GB882004A
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Automatic breaking of arc in arc welding
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