| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Austria | 8 | |
| #2 | United States | 4 | |
| #3 | Switzerland | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Control | |
| #3 | Medical technology | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Steam turbines | |
| #2 | Unspecified technologies | |
| #3 | Systems controlling non-electric variables | |
| #4 | Non-positive-displacement pumps | |
| #5 | Dentistry |
| # | Name | Total Patents |
|---|---|---|
| #1 | Roth Carl | 3 |
| #2 | Pfenninger G M B H Melms | 1 |
| #3 | Pfenninger Carl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB190824603A | Improvements in the Arrangement of Ships' Turbines. | |
| US934360A | Valve-gear for turbines. | |
| US943465A | Elastic-fluid turbine. | |
| US924108A | Elastic-fluid turbine. | |
| US892079A | Elastic-fluid turbine. |