US2717342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor translating devices
Assignee: AT&T Inc
•
Filing: 1952-10-28
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Granted: 1955-09-06
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Expires: 1972-10-28
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:03
CPC Classifications
H; H10; H10D; H10D62/00; H10D10/00; H10D62/01; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2476323A
Cited
US2600500A
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US2595497A
Cited
US2623103A
Cited
US2570978A
Cited
US2680159A
Cited
US2691736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-05 | 1959-03-07 | 1959-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-05 | 1963-03-07 | 1963-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-05 | 1967-03-07 | 1967-09-06 | $7700.00 | Window Closed / Lapsed |