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Letters of George B. Prescott to the commissioner of patents, in reference to the inventions conveyed by the assignment of Thomas A. Edison for duplex and quadruplex telegraphy

Letters of George B. Prescott to the commissioner of patents, in reference to the inventions conveyed by the assignment of Thomas A. Edison for duplex and quadruplex telegraphy

George B. Prescott

Details

OL Work ID
OL35602745W

Subjects

TelegraphDuplex systemPatentsQuadruplex systemPatent suits

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