| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 3 | |
| #3 | Denmark | 3 | |
| #4 | United Kingdom | 3 | |
| #5 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Cables and insulators | |
| #2 | Telephonic communication |
| # | Name | Total Patents |
|---|---|---|
| #1 | Tietgen Hermann | 12 |
| #2 | Hermann Tietgen | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB103108A | Improvements in the Manufacture of Air-space Cables. | |
| GB111496A | Improvements in the Insulation of Electric Cables. | |
| GB191320822A | Improvements in connection with Multiple Telephony. |