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US2635146A
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Speech analyzing and synthesizing communication system
Assignee: AT&T Inc
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Filing: 1949-12-15
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Granted: 1953-04-14
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Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 John C Steinberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:01
CPC Classifications
G; G10; G10L; G10L19/00; G10L19/02; Y; Y10; Y10S; Y10S84/00; Y10S84/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183248A
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US2151091A
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US2243089A
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US2243526A
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US2243527A
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US2458227A
Cited
US2466880A
Cited
US2522539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |