(under subclass 26) Subject matter wherein the means to modify the temperature of at least a part of the discharge device structure, such as the electrode and/or the electrode holder, includes means for circulating a heat transfer liquid in contact with the part which is to have its temperature modified.
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22, for consumable electrode discharge devices provided with means to supply an initially fluent material to the inter- electrode discharge area.
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313, Electric Lamp and Discharge Devices,
35, and the subclasses specified in the Notes to those subclasses for miscellaneous discharge devices which are provided with means for circulating a heat transfer in contact with a part of the discharge device.