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Title: E.H.T. rectifier, Coolidge, type KR3, serial no. 7093 [Go to resource]
Description: E.H.T. rectifier, Coolidge, type KR3, serial no. 7093, by General Electric, United States, 1940-1959. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1940-1959 Source: Science Museum Creator: General Electric (maker) Identifier: 1960-154/1 Go to resource More Like this...
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