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The New International Encyclopædia/Blake, Francis

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Edition of 1905. See also Francis Blake (telephone) on Wikipedia; and the disclaimer.

2389199The New International Encyclopædia — Blake, Francis

BLAKE, Francis (1850— ). An American inventor, born at Needham, Mass. In 1866-79 he was connected with the United States Coast Survey, and in 1S78 invented the transmitter for telephone instruments, which, known under his name, has become the most extensively used throughout the world.