Mobile electrostatic air filter for use in welding projects
USD329081S · kind S · design
5Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Sep 1, 2006 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.