Flame retention head for a waste oil-burning system
USD447554S · kind S · design
3Cited by
6References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 14, 2000 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Sep 4, 2015 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.