Patent US2334473A successfully refreshed from Google Patents.
US2334473A
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US
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Frequency modulation tuning indicator
Assignee: RCA Corp
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Filing: 1941-08-07
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Granted: 1943-11-16
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Expires: 1961-08-07
Abstract
No abstract record available.
Inventors
- 👤 Wendell L Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:58
CPC Classifications
H; H03; H03J; H03J3/00; H03J3/02; H03J3/12; H03J3/14
Claims Analysis
Total Claims: 0
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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) | 1946-11-15 | 1947-05-17 | 1947-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-15 | 1951-05-17 | 1951-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-15 | 1955-05-17 | 1955-11-16 | $7700.00 | Window Closed / Lapsed |