Power driven brush for cleaning carpets, floors or the like
USD306657S · kind S · design
22Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1987 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Mar 20, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.