Stopper for test tubes and the like
USD272856S · kind S · design
5Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1982 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Feb 28, 1998 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.