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Title: Standard all-electric signal motor, style H, for 10V DC, 190 [Go to resource]
Description: Standard all-electric signal motor, style H, for 10V DC, 1906, by McKenzie Holland and Westinghouse Power Signal Co., London. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1948-263 Go to resource More Like this...
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