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Title: Switch socket, tumbler type, pear shaped, patented 1912 [Go to resource]
Description: Switch socket, tumbler type, pear shaped, patented 1912. Pat.No.6673,1912. Rd.No.629181 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1985-971 Go to resource More Like this...
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