Mouthpiece for a spirometer
USD335343S · kind S · design
23Cited by
24References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 22, 1990 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | May 4, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.