| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 5 | |
| #2 | Austria | 3 | |
| #3 | Canada | 3 | |
| #4 | Greece | 2 | |
| #5 | Denmark | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes |
| # | Technology | |
|---|---|---|
| #1 | Burners | |
| #2 | Supplying fuel to combustion device |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sprenger Edwin | 9 |
| #2 | Edwin Sprenger | 5 |
| Publication | Filing date | Title |
|---|---|---|
| CA379638A | Boiler oil and air control system | |
| CA780604A | Devices for producing elliptical and ornamental movements | |
| CA498562A | Fluid-fuel furnace plant for steam-driven vehicles |