| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 4 | |
| #2 | Austria | 2 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | Spain | 2 | |
| #6 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Lighter-than air aircraft | |
| #3 | Measuring volume | |
| #4 | Steam turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ruthenberg Hermann | 12 |
| Publication | Filing date | Title |
|---|---|---|
| CA129897A | Rotary fan | |
| CA132010A | Air ship | |
| GB190923666A | Improvements in Air-ships and the like. | |
| US985635A | Apparatus for measuring the steam passing through a pipe. | |
| US959392A | Rotary fan or propeller. | |
| GB190913791A | Improvements in Rotary Fans or Propellers Adapted to Act upon the Air and the like. | |
| GB190727798A | Improvement relating to Wood Wool for Filtering Purposes. |