B41B 21/30
Electron-beam tubes or charactrons
Official title: Electron-beam tubes or charactrons (in general H01J31/00)
B41B21/30 (Electron-beam tubes or charactrons) appears on 1 US grants and 0 published applications in this corpus.
Search patents in B41B- Granted patents
- 1
- Published applications
- 0
- Assignees
- 1
- Inventors
- 1
- Latest grant
- 1 Aug 1978
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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By later US patents