Pattern 16XX Loud Speaking Telephones: Revision history

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24 September 2018

8 February 2015

  • curprev 17:1517:15, 8 February 2015Tone talk contribs 470 bytes +470 Created page with "The Royal Navy's '''Pattern 1639''' (for upper deck use) and '''Pattern 1643'' (for engine room use) Graham Telephones were created some time before 1905 for shipboard communicat..."