| # | Country | Total Patents | |
|---|---|---|---|
| #1 | France | 4 | |
| #2 | Denmark | 3 | |
| #3 | United Kingdom | 3 | |
| #4 | Canada | 1 | |
| #5 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Electrical machinery and energy | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Alarm systems | |
| #2 | Electric switches | |
| #3 | Guiding railway traffic |
| # | Name | Total Patents |
|---|---|---|
| #1 | Trautmann Bertha | 12 |
| Publication | Filing date | Title |
|---|---|---|
| GB191219105A | Improvements in Burglar Alarm Systems. | |
| GB190928638A | Improvements in Electrical Burglar-alarms. | |
| CA106429A | Controlling system for railways | |
| GB190702053A | Improvements in Electrical Apparatus for Automatically Indicating the Positions of Trains on Railways |