US2384456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiving system
Assignee: AT&T Inc
•
Filing: 1944-05-23
•
Granted: 1945-09-11
•
Expires: 1964-05-23
Abstract
No abstract record available.
Inventors
- 👤 James R Davey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:21
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/02; H04L1/06; H04L27/00; H04L27/10; H04L27/14; H04L27/144; H04L27/148
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-09-10 | 1949-03-12 | 1949-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-10 | 1953-03-12 | 1953-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-10 | 1957-03-12 | 1957-09-11 | $7700.00 | Window Closed / Lapsed |