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USD257772S · kind S · design
58Cited by
7References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 12, 1978 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 6, 1995 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.