Image: Tripin 1911
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Description: Illustration of "Tripin" 3-pin earthed plug manufactured by A. P. Lundberg & Sons of London and dated 1911
Title: Tripin 1911
Credit: Book: "SMALL SWITCHES, etc., and their CIRCUITS" (1911)
Author: MAYCOCK, W. Perren
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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