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US2879484A
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Assignee: AT&T Inc
•
Filing: 1953-02-11
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Granted: 1959-03-24
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Expires: 1973-02-11
Abstract
No abstract record available.
Inventors
- 👤 Stewart E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:58
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/213
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR964637A
Cited
US2609450A
Cited
US2632809A
Cited
US2617880A
Cited
US2615982A
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US2588832A
Cited
US2636116A
Cited
US2741744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |