Hand-held refractometer
USD348849S · kind S · design
11Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1993 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jul 19, 2008 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.