Surgical drainage unit
USD312132S · kind S · design
3Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 1987 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Nov 13, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.