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US2692303A
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Speech interpolated communication system
Assignee: AT&T Inc
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Filing: 1950-12-19
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Granted: 1954-10-19
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Expires: 1970-12-19
Abstract
No abstract record available.
Inventors
- 👤 Alton C Dickieson
- 👤 Paul G Edwards
- 👤 Donald D Robertson
- 👤 Alphons V Wurmser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:11
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2271000A
Cited
US2388001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-18 | 1958-04-19 | 1958-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-18 | 1962-04-19 | 1962-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-18 | 1966-04-19 | 1966-10-19 | $7700.00 | Window Closed / Lapsed |