US2691736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical translation device, including semiconductor
Assignee: AT&T Inc
•
Filing: 1950-12-27
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Granted: 1954-10-12
•
Expires: 1970-12-27
Abstract
No abstract record available.
Inventors
- 👤 James R Haynes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:06
CPC Classifications
H; H10; H10F; H10F30/00; H10F30/20; H10F30/21; H10F30/24; H10F30/245; H10F99/00; H03; H03F; H03F1/00; H03F1/26; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2402661A
Cited
US2502479A
Cited
US2502488A
Cited
US2544211A
Cited
US2570978A
Cited
US2561411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |