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US2629773A
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Assignee: AT&T Inc
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Filing: 1946-01-11
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Granted: 1953-02-24
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Expires: 1966-01-11
Abstract
No abstract record available.
Inventors
- 👤 Nathan I Hall
- 👤 Clifford A Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:41
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1596618A
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US2165961A
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US2129669A
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US2197123A
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US2433368A
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US2425345A
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US2411534A
Cited
US2427100A
Cited
US2454530A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |