Pressure relief valve for a low pressure cuffed tracheostomy tube
USD243412S · kind S · design
10Cited by
8References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 25, 1975 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Feb 15, 1991 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.