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Operator (1874)

New York · leaf 281

An illustration from Operator, 1874, leaf 281
d diagram showing every part ment, while perfecting Ins improvement in vulcanized of both bell and switchboard. fndia-rubber and its varied applications. The necessities of the telegraph business requiring an The new feature of a desk and battery box attachment added without extra charge, will be… … There are thousands of miles in use throughout the country, by Fire Alarm and other Telegraph Companies of *ft§*i*ft**ft**i**ii*!iftiii!i all our principal cities. It has been used largely in the city of New York, under IVU1MIU1V11 all conditions and exposures for the last nine years. Constant…

Telegraph -- Periodicals

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