Sports helmet
USD257073S · kind S · design
42Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1979 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Sep 30, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.