| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 33 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games | |
| #2 | Transport | |
| #3 | Machines | |
| #4 | Civil engineering | |
| #5 | Optics |
| # | Technology | |
|---|---|---|
| #1 | Devices for public amusement | |
| #2 | Unspecified technologies | |
| #3 | Doors and windows | |
| #4 | Vehicle wheels | |
| #5 | Wheelchairs and sledges | |
| #6 | Locks | |
| #7 | Cameras | |
| #8 | Physical training equipment | |
| #9 | Games | |
| #10 | Cycle accessories |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ridgway Herbert N | 33 |
| Publication | Filing date | Title |
|---|---|---|
| US2919932A | Automatic safety guard for vehicles | |
| US2779596A | Amusement slide | |
| US2705144A | Amusement slide | |
| US2715342A | Tandem attachment for bicycles | |
| US2283948A | Automobile traction device | |
| US2286011A | Tire chain appliance | |
| US2241923A | Automatic emergency traction device for automobiles | |
| US2235563A | Amusement device | |
| US1959038A | Projector with remote control | |
| US1794498A | Key tag | |
| US1619988A | Amusement apparatus | |
| US1665981A | Amusement apparatus | |
| US1466963A | Amusement device | |
| US1476922A | Amusement device | |
| US1417570A | Amusement device | |
| US1341220A | Amusement apparatus | |
| US1341219A | Amusement apparatus | |
| US1363352A | Amusement device | |
| US1279911A | Amusement device. | |
| US1200137A | Gun-carriage. |