| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Measurement | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Lighter-than air aircraft | |
| #3 | Parachutes | |
| #4 | Measuring distances | |
| #5 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Upson Ralph H | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2406719A | Stall warning device | |
| US1864962A | Airplane brake and rudder control | |
| US2021470A | Aircraft | |
| US2008885A | Aircraft instrument | |
| US1935824A | Aircraft control means | |
| US1806432A | Airplane control mechanism | |
| US1807946A | Airplane and method of making same | |
| US1777593A | Airplane | |
| US1686646A | Kite balloon | |
| US1553340A | Balloon | |
| US1648630A | Dirigible |