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K 227
The 'Byng' Intercommunication Telephone Consisting
of 'Byng' Microphone, Induction Coil, Double Pole "Watch" Receiver, Call Bell, Ringing Key and Line Selector.
Taken from the G.E.C. Illustrated Telephone Catalogue 9th edition (1904) |
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Last revised: February 16, 2023FM2 |