| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 5 | |
| #2 | Switzerland | 4 | |
| #3 | Germany | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Birmann Rudolph | 6 |
| #2 | Rudolph Birmann | 4 |
| Publication | Filing date | Title |
|---|---|---|
| DE1291943B | Exhaust gas turbocharger for an internal combustion engine | |
| CA696140A | Explosion gas turbines | |
| CA583915A | Elastic fluid passages for compressor, diffusor, or turbine | |
| CA486265A | Gas turbine power plant | |
| CA736293A | Turbocharger for internal combustion engines | |
| CA734246A | Centripetal turbine |