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Title: Hearing aid, "Selector" patent no [Go to resource]
Description: Hearing aid, "Selector" patent no. 629256, in blue leatherette box, by Multitone, England, 1960-1970 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Creator: Multitone Electric Co. Ltd. (maker) Identifier: 1988-753 Go to resource More Like this...
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