US2436229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recorder
Assignee: AT&T Teletype Corp
•
Filing: 1943-07-29
•
Granted: 1948-02-17
•
Expires: 1963-07-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:04
CPC Classifications
H; H04; H04L; H04L17/00; H04L17/16; H04L17/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1623748A
Cited
US1370669A
Cited
US1420931A
Cited
US1895108A
Cited
US1936956A
Cited
US2174731A
Cited
US2255794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |