File box
USD314981S · kind S · design
11Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1987 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Feb 26, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.