| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Materials and metallurgy | |
| #3 | Engines, pumps and turbines | |
| #4 | Weapons |
| # | Technology | |
|---|---|---|
| #1 | Aeroplanes | |
| #2 | Iron and steel production | |
| #3 | Jet-propulsion plants | |
| #4 | Weapon sights |
| # | Name | Total Patents |
|---|---|---|
| #1 | Herrick Gerard P | 12 |
| Publication | Filing date | Title |
|---|---|---|
| US2712911A | Convertible aircraft | |
| US2675195A | Power plant for aircraft having vertical as well as horizontal propulsion | |
| US2699299A | Convertible aircraft | |
| US2544497A | Multiple flight aircraft | |
| US2518008A | Convertible aircraft | |
| US2518007A | Aircraft operable either as fixed or rotary lifting surface type | |
| US1792015A | Aerofoil | |
| US1792014A | Aeroplane | |
| US806142A | Rear sight for guns and the like. | |
| US697249A | Blast-furnace. | |
| CA320075A | Aerofoil | |
| CA320074A | Aeroplane |