Hard head gear head protector
USD253976S · kind S · design
19Cited by
3References
1Claims
0Family size
Inventor
Key dates
| Filing date | Apr 14, 1977 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Jan 22, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.