US2958770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alert radio signal receiver
Assignee: RCA Corp
•
Filing: 1958-01-09
•
Granted: 1960-11-01
•
Expires: 1978-01-09
Abstract
No abstract record available.
Inventors
- 👤 James J Davidson
- 👤 John M Link
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
H; H03; H03G; H03G1/00; H03G1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2055164A
Cited
US2096874A
Cited
US2250596A
Cited
US2344618A
Cited
US2367327A
Cited
US2392672A
Cited
US2531416A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |