| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Argentina | 1 | |
| #2 | Australia | 1 | |
| #3 | Brazil | 1 | |
| #4 | Canada | 1 | |
| #5 | Germany | 1 | |
| #6 | Spain | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Italy | 1 | |
| #10 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #11 | United States | 1 | |
| #12 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Rotary pistons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Kurherr Waldemar H | 8 |
| #2 | Kurkherr Valdemar Khelmut | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4451219A | Valveless bi-chamber rotary steam engine with turbine effect | |
| GB2089893A | Bi-chamber rotary elastic-fluid engine |