| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 11 | |
| #2 | United Kingdom | 5 |
| # | Industry | |
|---|---|---|
| #1 | Control |
| # | Technology | |
|---|---|---|
| #1 | Alarm systems |
| Publication | Filing date | Title |
|---|---|---|
| GB191308240A | Improvements in or relating to Apparatus for Photographically Recording Electrical Measurements and for like purposes. | |
| GB191306936A | Improved Circuit Arrangements for Registering Subscribers' Calls in Semi-automatic Telephone Installations. | |
| GB191224037A | Improvements in Signalling InstallationS more particularly adapted for Fire Alarms. | |
| GB190816164A | Improvements in Spring Switches for Electrically Setting Railway Points and Signals. | |
| GB190719340A | Improvements relating to Signalling Telegraphs |