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Telegraph Switches
National Inventors Hall of Fame1880-05-18
National Inventors Hall of Fame Museum
Alexandria, United States
Patent model for Telegraph Switches invented by Adolphus G. Snell. Patented May 18, 1880 (No. 227,851).
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Details
- Title: Telegraph Switches
- Creator: National Inventors Hall of Fame
- Date Created: 1880-05-18
- Location: North Canton, Ohio
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