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USD253790S · kind S · design
22Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 17, 1977 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | Dec 25, 1993 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.