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Title: Keyboard perforator (brass plate on object states: "ETC keyb [Go to resource]
Description: Keyboard perforator (brass plate on object states: "ETC keyboard perforator Judd and Fraser's patent No. 24624/99") License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1925-187 Go to resource More Like this...
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