US2636936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television secrecy system
Assignee: RCA Corp
•
Filing: 1946-09-10
•
Granted: 1953-04-28
•
Expires: 1966-09-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred N Goldsmith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:16
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/167
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1571005A
Cited
US1769918A
Cited
US1769920A
Cited
US2236502A
Cited
US2251525A
Cited
GB560925A
Cited
US2402058A
Cited
US2407259A
Cited
US2402067A
Cited
US2408692A
Cited
US2414101A
Cited
US2419568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |