Top cap of a quick-change filter cartridge
USD322836S · kind S · design
83Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | Dec 31, 1991 |
| Priority date | — |
| Expiry date | Dec 31, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.