Exhaust valve for pressure cookers
USD276972S · kind S · design
1Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1982 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | Jan 1, 1999 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.