| 1. | He was formally inaugurating the 600-line expanded automatic telephone exchange in Tangail.
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| 2. | An automatic telephone exchange system links all important cities and towns.
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| 3. | The Strowger Automatic Telephone Exchange company had been formed on 30 October 1891.
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| 4. | The Strowger Automatic Telephone Exchange Company was founded in 1891.
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| 5. | One of the best forms of selection is illustrated by the automatic telephone exchange.
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| 6. | The world's first automatic telephone exchange had opened in La Porte, Indiana in November 1892.
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| 7. | Air conditioning was fitted throughout the ship, and a 200-line automatic telephone exchange was installed.
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| 8. | A "'miraculous machine'--a mechanical process which could work on scanning', and automatic telephone exchange connections.
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| 9. | On 3 February 1924, the first automatic telephone exchange in Spain is inaugurated in Balaguer.
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| 10. | He first conceived his invention in 1888, and patented the automatic telephone exchange in 1891.
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