H04Q 2213/383
Main and subexchange
Official title: Main and subexchange, e.g. satellite exchanges
H04Q2213/383 (Main and subexchange) appears on 1 US grants and 0 published applications in this corpus.
Search patents in H04Q- Granted patents
- 1
- Published applications
- 0
- Assignees
- 1
- Inventors
- 4
- Latest grant
- 30 Jun 1998
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
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Most cited
By later US patents