D21H 5/0057
Apparatus permitting switching from one technique to another
Official title: {Apparatus permitting switching from one technique to another}
D21H5/0057 (Apparatus permitting switching from one technique to another) appears on 2 US grants and 0 published applications in this corpus.
Search patents in D21H- Granted patents
- 2
- Published applications
- 0
- Assignees
- 2
- Inventors
- 4
- Latest grant
- 20 Oct 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
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Most cited
By later US patents