US2642487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: RCA Corp
•
Filing: 1947-02-28
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Granted: 1953-06-16
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Expires: 1967-02-28
Abstract
No abstract record available.
Inventors
- 👤 Alfred C Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:56
CPC Classifications
G; G03; G03B; G03B33/00; G03B33/10; G03B33/12; H; H04; H04N; H04N23/00; H04N23/10; H04N23/13; H04N9/00; H04N9/12; H04N9/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1696739A
Cited
US1857578A
Cited
US1843007A
Cited
US2184999A
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US2352177A
Cited
US2335180A
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US2373936A
Cited
US2389646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |