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Title: "Sunviv" hotwire vacuum switch, without glass envelope [Go to resource]
Description: "Sunviv" hotwire vacuum switch, without glass envelope, c.1970 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1970 Source: Science Museum Identifier: 1975-379 Go to resource More Like this...
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