Speaking-Telegraph, May 03, 1892
Item
- Title
- Speaking-Telegraph, May 03, 1892
- Author
- Thomas A. Edison
- Date Executed
- 1886-02-17
- Date Filed
- 1886-02-18
- Date Issued
- 1892-05-03
- Type
- Patent Issued
- Subject
- Telegraphy and Telephony
- Document ID
- PAT474232
- Has Format
- https://iiif.archive.org/iiif/edisonpatent474232/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