Telegraphy, September 30, 1890
Item
- Title
- Telegraphy, September 30, 1890
- Author
- Thomas A. Edison
- Date Executed
- 1885-10-07
- Date Filed
- 1885-10-23
- Date Issued
- 1890-09-30
- Type
- Patent Issued
- Subject
- Telegraphy and Telephony
- Document ID
- PAT437422
- Has Format
- https://iiif.archive.org/iiif/edisonpatent437422/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