Patent US2519688A successfully refreshed from Google Patents.
US2519688A
Expired / Lapsed
US
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Signal code translator
Assignee: AT&T Inc
•
Filing: 1946-11-08
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Granted: 1950-08-22
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Expires: 1966-11-08
Abstract
No abstract record available.
Inventors
- 👤 Mitchell Doren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1035043A
Cited
US1645573A
Cited
US1860967A
Cited
US1990019A
Cited
US2075536A
Cited
US2361240A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |