| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 7 | |
| #2 | Austria | 4 | |
| #3 | Switzerland | 4 | |
| #4 | Denmark | 3 | |
| #5 | Spain | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Cyclically operating valves |
| # | Name | Total Patents |
|---|---|---|
| #1 | Cross Roland Claude | 14 |
| #2 | Roland Claude Cross | 4 |
| Publication | Filing date | Title |
|---|---|---|
| ES143387A1 | A rotary valve motor. | |
| ES136767A1 | Improvements in internal combustion engines. | |
| CA331384A | Engine or pump valve | |
| CA347448A | Rotary or slide valve | |
| CA364117A | Internal combustion engine | |
| CA384643A | Piston for engines and pumps | |
| CA431568A | Engine speed governor | |
| CA354036A | Rotary valve for engines | |
| CA370900A | Rotary valve engine |