| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | United Kingdom | 5 | |
| #3 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hiller Jr Stanley | 8 |
| #2 | Helicopters Inc United | 1 |
| #3 | Palo Alto | 1 |
| #4 | Sigler Harold H | 1 |
| #5 | Joseph Stuart | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB662319A | Rotary wing aircraft | |
| US2534353A | Rotary wing aircraft | |
| GB645234A | Helicopters | |
| GB641604A | Improvements in or relating to helicopters | |
| US2481750A | Helicopter | |
| GB630930A | Improvements in or relating to helicopters | |
| GB623470A | Improvements in or relating to helicopters | |
| US2491733A | Helicopter | |
| US2481749A | Reaction jet torque compensation for helicopters | |
| US2481748A | Helicopter | |
| US2481746A | Helicopter | |
| US2481747A | Helicopter | |
| US2481745A | Helicopter |