US2774066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transmitting and receiving circuits for wave transmission systems
Assignee: AT&T Inc
•
Filing: 1943-01-30
•
Granted: 1956-12-11
•
Expires: 1963-01-30
Abstract
No abstract record available.
Inventors
- 👤 Arthur L Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/10; H01P1/12; H01P1/122; G; G01; G01S; G01S7/00; G01S7/02; G01S7/03; G01S7/034; H03; H03C; H03C7/00; H03C7/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2281274A
Cited
US2281717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |