| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | United Kingdom | 4 | |
| #3 | Austria | 2 | |
| #4 | Canada | 1 | |
| #5 | Spain | 1 | |
| #6 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Guiding railway traffic | |
| #2 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Koenig Carl | 11 |
| #2 | Carl Koenig | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB191217909A | Improvements in or relating to a Signalling System for Indicating the Position of Vehicles on Railways and the like. | |
| US1109534A | Controlling device for railway-vehicles. | |
| GB189823905A | Combines Universal Screw-wrench and Adjustable Turn-screw. | |
| GB189804910A | Improvements in and relating to Primary Batteries. | |
| CA61778A | Primary battery | |
| GB189802024A | Improvements in and relating to Primary Batteries. |