Telegraph-Relays, May 12, 1874
Item
- Title
- Telegraph-Relays, May 12, 1874
- Author
- Thomas A. Edison
- Date Executed
- 1873-04-23
- Date Filed
- 1873-06-27
- Date Issued
- 1874-05-12
- Type
- Patent Issued
- Subject
- Telegraphy and Telephony
- Document ID
- PAT150846
- Has Format
- https://iiif.archive.org/iiif/edisonpatent150846/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