F22B 37/226
Protection of drums against combustion
Official title: {Protection of drums against combustion}
F22B37/226 (Protection of drums against combustion) appears on 2 US grants and 0 published applications in this corpus.
Search patents in F22B- Granted patents
- 2
- Published applications
- 0
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 9 Nov 1993
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
No published applications in this class yet.
Most cited
By later US patents