F42B 22/12
At a fixed depth setting
Official title: at a fixed depth setting
F42B22/12 (At a fixed depth setting) appears on 2 US grants and 0 published applications in this corpus.
Search patents in F42B- Granted patents
- 2
- Published applications
- 0
- Assignees
- 2
- Inventors
- 7
- Latest grant
- 9 Sep 1980
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 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