| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 4 | |
| #2 | Austria | 3 | |
| #3 | Denmark | 2 | |
| #4 | Spain | 2 | |
| #5 | Canada | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Rotary-pistons | |
| #2 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Feuerheerd Ernest | 7 |
| #2 | Ernest Feuerheerd | 4 |
| #3 | Malcolm James Aratoon | 3 |
| #4 | James Aratoon Malcolm | 2 |
| #5 | Thomas Horace Henderson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| ES106769A1 | Improvements in rotating devices such as machines, pumps, meters and their like. | |
| GB130839A | Improvements in and relating to Rotary Engines, Rotary Pumps, Air Compressors, and the like. | |
| CA200946A | Turbine, rotary pump, air compressor, etc. |