Relay for Telegraphs, March 22, 1881
Item
- Title
- Relay for Telegraphs, March 22, 1881
- Author
- Thomas A. Edison
- Date Executed
- 1880-12-11
- Date Filed
- 1880-12-14
- Date Issued
- 1881-03-22
- Type
- Patent Issued
- Subject
- Telegraphy and Telephony
- Document ID
- PAT239154
- Has Format
- https://iiif.archive.org/iiif/edisonpatent239154/manifest.json
- Rights
- Edison's patents are in the public domain and have been made available through the generosity of David Kovanen.
- Publisher
- The Thomas A. Edison Papers