E02D 23/06
Bringing persons or material into or out of compressed air caissons
Official title: Bringing persons or material into or out of compressed air caissons {(air locks in mines E21F1/14)}
E02D23/06 (Bringing persons or material into or out of compressed air caissons) appears on 2 US grants and 0 published applications in this corpus.
Search patents in E02D- Granted patents
- 2
- Published applications
- 0
- Assignees
- 1
- Inventors
- 4
- Latest grant
- 5 May 1987
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 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