US2363583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way radio communication
Assignee: AT&T Inc
•
Filing: 1942-12-16
•
Granted: 1944-11-28
•
Expires: 1962-12-16
Abstract
No abstract record available.
Inventors
- 👤 George W Gilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:20
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40
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) | 1947-11-28 | 1948-05-29 | 1948-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-11-28 | 1952-05-29 | 1952-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-11-28 | 1956-05-29 | 1956-11-28 | $7700.00 | Window Closed / Lapsed |