US2451640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: RCA Corp
•
Filing: 1945-05-11
•
Granted: 1948-10-19
•
Expires: 1965-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert R Thalner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:42
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/40; H04N23/70; H04N23/749
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2084700A
Cited
US2222759A
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US2182578A
Cited
US2307375A
Cited
US2292817A
Cited
US2404098A
Cited
US2404173A
Cited
US2345282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-19 | 1952-04-19 | 1952-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-19 | 1956-04-19 | 1956-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-19 | 1960-04-19 | 1960-10-19 | $7700.00 | Window Closed / Lapsed |