US2261618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blocking-layer electrode system
Assignee: RCA Corp
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Filing: 1940-01-12
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Granted: 1941-11-04
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Expires: 1960-01-12
Abstract
No abstract record available.
Inventors
- 👤 Esselin Ludovicus Au Lambertus
- 👤 Willem Christiaan Van Geel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:20
CPC Classifications
H; H10; H10W; H10W72/00; H10D; H10D48/00; H10D48/01; H10D48/04; H10D99/00; H10W40/00; H10W40/60
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) | 1944-11-03 | 1945-05-05 | 1945-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-11-03 | 1949-05-05 | 1949-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-11-03 | 1953-05-05 | 1953-11-04 | $7700.00 | Window Closed / Lapsed |