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US2782307A
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Electronic switching device for use in radio systems and multi-channel telephone systems employing successive pulses
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1951-10-10
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Granted: 1957-02-19
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Expires: 1971-10-10
Abstract
No abstract record available.
Inventors
- 👤 Sivers Carl Henric Von
- 👤 Wado Kurt Reid
- 👤 Wickman Klas Rudolf
- 👤 Person Lars Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:57
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/74; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042; H04Q; H04Q11/00; H04Q11/04; Y; Y10; Y10S; Y10S84/00; Y10S84/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2266509A
Cited
US2258732A
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US2281395A
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US2557729A
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US2622193A
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US2575904A
Cited
US2535303A
Cited
US2576026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-02-19 | 1960-08-20 | 1961-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-19 | 1964-08-20 | 1965-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-19 | 1968-08-20 | 1969-02-19 | $7700.00 | Window Closed / Lapsed |