| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Furniture and games | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Hats | |
| #2 | Physical training equipment | |
| #3 | Dry-docking of vessels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ridgeway Hart Henry | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US1716550A | Head-protective device | |
| US1656914A | Communicating helmet | |
| US1606531A | Helmet | |
| US1616187A | Helmet | |
| US1531931A | Football | |
| US1532625A | Playing device | |
| US1594174A | Protective device for athletic wear | |
| US1518509A | Nonsinkable coat | |
| US1483881A | Football helmet | |
| US1531394A | Water-polo cap | |
| US1469907A | Playing ball |