Hand-held spirometry device
USD541419S1 · kind S1 · design
9Cited by
43References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2005 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Apr 24, 2021 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.