Sand timer
USD298419S · kind S · design
3Cited by
2References
1Claims
0Family size
Inventor
Key dates
| Filing date | Mar 10, 1986 |
| Grant date | Nov 8, 1988 |
| Priority date | — |
| Expiry date | Nov 8, 2002 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.