US2481622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube with photo-dichroic ionic crystal light modulating screen
Assignee: SKIATRON Corp
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Filing: 1945-06-06
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Granted: 1949-09-13
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Expires: 1965-06-06
Abstract
No abstract record available.
Inventors
- 👤 Adolph H Rosenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:42
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-12 | 1953-03-14 | 1953-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-12 | 1957-03-14 | 1957-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-12 | 1961-03-14 | 1961-09-13 | $7700.00 | Window Closed / Lapsed |