Patent US2136441A successfully refreshed from Google Patents.
US2136441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television system
Assignee: RCA Corp
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Filing: 1935-04-08
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Granted: 1938-11-15
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Expires: 1955-04-08
Abstract
No abstract record available.
Inventors
- 👤 Karolus August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:42
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/14; E21D15/28; E21D15/38; H; H04; H04N; H04N3/00; H04N3/10; H04N3/12
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) | 1941-11-14 | 1942-05-16 | 1942-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-11-14 | 1946-05-16 | 1946-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-11-14 | 1950-05-16 | 1950-11-15 | $7700.00 | Window Closed / Lapsed |