US2992421A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Induction type translator
Assignee: AT&T Inc
•
Filing: 1956-03-29
•
Granted: 1961-07-11
•
Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Whitney Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2369474A
Cited
US2620974A
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US2686838A
Cited
US2751546A
Cited
US2782399A
Cited
US2822532A
Cited
US2813260A
Cited
US2812450A
Cited
US2810785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-10 | 1965-01-09 | 1965-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-10 | 1969-01-09 | 1969-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-10 | 1973-01-09 | 1973-07-11 | $7700.00 | Window Closed / Lapsed |