US2589930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color television light divider
Assignee: RCA Corp
•
Filing: 1948-03-17
•
Granted: 1952-03-18
•
Expires: 1968-03-17
Abstract
No abstract record available.
Inventors
- 👤 Glenn L Dimmick
- 👤 Mary E Widdop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/12; H04N9/31; G; G02; G02B; G02B27/00; G02B27/10; G02B27/14; G02B27/142; G02B27/149; G02B5/00; G02B5/20; G02B5/28; G02B5/285; H04N9/16; H04N9/18
Claims Analysis
Total Claims: 0
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US2420168A
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US2374475A
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US2412496A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |