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
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Author
Contributions
- United States. Patent Office - Contributor
Publication
1875 - s.n., s.l., No place, unknown, or undetermined
Language
English
Word Count
3,000 words, Guess
Page Count
12 pages
Identifiers
- OCLC Control Number224448633
- Open LibraryOL48040477M
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