Patent US2666814A successfully refreshed from Google Patents.
US2666814A
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US
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Semiconductor translating device
Assignee: AT&T Inc
•
Filing: 1949-04-27
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Granted: 1954-01-19
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Expires: 1969-04-27
Abstract
No abstract record available.
Inventors
- 👤 Shockley William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:58
CPC Classifications
H; H10; H10P; H10P34/00; H10P34/40; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/34; H10D; H10D88/00; H10D99/00; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US917191A
Cited
US1810539A
Cited
US1877140A
Cited
US2161985A
Cited
US2402661A
Cited
US2524035A
Cited
US2600500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |