F21H 3/00
Manufacturing incandescent mantles
Official title: Manufacturing incandescent mantles; Treatment prior to use, e.g. burning-off; Machines for manufacturing
F21H3/00 (Manufacturing incandescent mantles) appears on 2 US grants and 0 published applications in this corpus.
Search patents in F21H- Granted patents
- 2
- Published applications
- 0
- Assignees
- 0
- Inventors
- 1
- Latest grant
- 23 Jun 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 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