Patent US2998596A successfully refreshed from Google Patents.
US2998596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Translator and display device
Assignee: AT&T Inc
•
Filing: 1957-12-05
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Granted: 1961-08-29
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Expires: 1977-12-05
Abstract
No abstract record available.
Inventors
- 👤 Paul B Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:28
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/04; G09G3/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2046977A
Cited
US2675961A
Cited
US2718634A
Cited
US2676289A
Cited
US2754500A
Cited
US2783464A
Cited
US2871467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |