Educational toy viewing device
USD299473S · kind S · design
12Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1986 |
| Grant date | Jan 17, 1989 |
| Priority date | — |
| Expiry date | Jan 17, 2003 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.