US2418779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali metal halide and luminescent screens of substantially coincident spectral absorption
Assignee: RCA Corp
•
Filing: 1942-07-22
•
Granted: 1947-04-08
•
Expires: 1962-07-22
Abstract
No abstract record available.
Inventors
- 👤 Humboldt W Leverenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:33
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)
US2152353A
Cited
US831591A
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US1448456A
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US2096986A
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US1925546A
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US2072115A
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GB432432A
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US2163918A
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US2155465A
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US2247112A
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US2330171A
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US2306407A
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US2243828A
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US2351889A
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US2263149A
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US2275290A
Cited
US2303563A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-07 | 1950-10-07 | 1951-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-07 | 1954-10-07 | 1955-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-07 | 1958-10-07 | 1959-04-08 | $7700.00 | Window Closed / Lapsed |