US3400216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speech recognition apparatus
Assignee: National Research Development Corp UK
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Filing: 1965-02-01
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Granted: 1968-09-03
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Expires: 1985-02-01
Abstract
No abstract record available.
Inventors
- 👤 Newman Edward Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:43
CPC Classifications
G; G10; G10L; G10L15/00; G10L15/02; G06; G06G; G06G7/00; G06G7/12; G06G7/19; G06G7/1928; G06G7/1935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |