Patent US2569443A successfully refreshed from Google Patents.
US2569443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telegraph storage system
Assignee: AT&T Inc
•
Filing: 1946-06-06
•
Granted: 1951-10-02
•
Expires: 1966-06-06
Abstract
No abstract record available.
Inventors
- 👤 Walter M Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:34
CPC Classifications
H; H04; H04L; H04L12/00; H04L12/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2179736A
Cited
US2304775A
Cited
US2368826A
Cited
US2430447A
Cited
US2376111A
Cited
US2406787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |