Patent US2452522A successfully refreshed from Google Patents.
US2452522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminescent screen and method of developing light
Assignee: RCA Corp
•
Filing: 1941-03-18
•
Granted: 1948-10-26
•
Expires: 1961-03-18
Abstract
No abstract record available.
Inventors
- 👤 Humboldt W Leverenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:57
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/18; H01J29/187
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2096986A
Cited
US1934821A
Cited
US2030403A
Cited
US2124225A
Cited
GB474907A
Cited
GB490029A
Cited
GB498740A
Cited
US2227070A
Cited
GB514776A
Cited
US2206280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |