NATIONAL TELEPHONE COMPANY
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![]() Pattern No. B30 Comprises - Granular Carbon Transmitter fitted inside the case, Watch Receiver, Silk Cord, Automatic Switch-hook, Induction Coil, 2 Magnet Generator and Bell. This small type of instrument will be found useful in positions where the question of space is a consideration. The batteries are fitted away from the instrument, which can be provided with Lightning Arresters at a small extra charge. Taken from the 1903 Catalogue. |
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Last revised: July 03, 2020FM2 |