Casing for a vacuum cleaner
USD253891S · kind S · design
1Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1977 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.