Combined blower and vacuum unit
USD304510S · kind S · design
23Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Nov 7, 2003 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.