H01J 17/58
With more than one cathode or anode
Official title: with more than one cathode or anode
H01J17/58 (With more than one cathode or anode) appears on 2 US grants and 0 published applications in this corpus.
Search patents in H01J- Granted patents
- 2
- Published applications
- 0
- Assignees
- 2
- Inventors
- 9
- Latest grant
- 13 May 1997
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 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
By publication year. Applications have been published since 2001.
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By later US patents