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USD306175S · kind S · design
11Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Feb 20, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.