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Description: 3 mercury vapour thyratron rectifiers, resemble large light bulbs with 4-pin plug at base, made by B.T.H., Rugby, English, 1935-1960 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: rectifiers Temporal: 1935-1960 Source: Science Museum Creator: British Thomson-Houston Co. Ltd. Identifier: A658124 Go to resource More Like this...
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