| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 14 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Weapons | |
| #5 | Medical technology | |
| #6 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Devices for public amusement | |
| #2 | Toys | |
| #3 | Vehicle tyre repairing | |
| #4 | Unspecified technologies | |
| #5 | Dentistry | |
| #6 | Targets | |
| #7 | Explosiveness missiles | |
| #8 | Railway systems | |
| #9 | Unspecified technologies | |
| #10 | Accessories for machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Mangels William F | 14 |
| #2 | Brewster Charles N | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2285292A | Dispensing device | |
| US1527893A | Pleasure railway | |
| US1171220A | Carousel. | |
| US1168089A | Carousel. | |
| US997071A | Mechanical toboggan-slide. | |
| US991336A | Amusement apparatus. | |
| US1007467A | Means for teaching aviation and testing aeroplanes. | |
| US925818A | Pleasure-railway. | |
| US895383A | Carving-machine. | |
| US873570A | Amusement apparatus. | |
| US843406A | Gear for merry-go-rounds. | |
| US820805A | Amusement device. | |
| US734911A | Electric target. | |
| US693295A | Merry-go-round. |