US2541018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop-on-signal radio apparatus
Assignee: SIGNAL TUNED RADIO Corp
•
Filing: 1946-11-01
•
Granted: 1951-02-13
•
Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Edward F Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:35
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1252312A
Cited
US1624132A
Cited
US1881460A
Cited
US1968302A
Cited
US2112687A
Cited
US2205097A
Cited
US2170694A
Cited
US2260810A
Cited
US2369542A
Cited
US2304871A
Cited
US2303723A
Cited
US2343199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |