US2221096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio receiver control circuits
Assignee: RCA Corp
•
Filing: 1938-08-12
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Granted: 1940-11-12
•
Expires: 1958-08-12
Abstract
No abstract record available.
Inventors
- 👤 Keall Oswold Edward
- 👤 Rust Noel Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:11
CPC Classifications
H; H03; H03G; H03G5/00; H03G5/16; H03G5/24; H03G5/26; H03J; H03J7/00; H03J7/02; H03J7/04; H03J7/16; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/14
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) | 1943-11-12 | 1944-05-13 | 1944-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-11-12 | 1948-05-13 | 1948-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-11-12 | 1952-05-13 | 1952-11-12 | $7700.00 | Window Closed / Lapsed |