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US1023309A
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Electrical resistance furnace.
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GB191100419A
|
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Improvements in Electric Furnaces.
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US932986A
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Transforming smelting-furnace.
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GB190813257A
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Improvements relating to Electric Furnaces.
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US853241A
|
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Step-by-step electric seam-welding apparatus.
|
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US875910A
|
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Electric chain-welding machine.
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GB190328662A
|
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Improvements in Electric Chain Welding Machines.
|
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GB190111951A
|
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Ampere Meter for the Registration of the Maximum Consumption of Electrical Current
|
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US636203A
|
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Electric resistance.
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GB189728721A
|
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Improvements in the Manufacture of Electrical Resistances of Metal Foil.
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GB189728578A
|
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An Improved Tray and Cover, Principally for Preserving Food.
|
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GB189413594A
|
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Improvements relating to the Insulation of Wires for Electric Heating Apparatus.
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