Hinged top card file
USD256029S · kind S · design
6Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Jul 22, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.