US2522380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correcting position of undeflected spot on multigun cathode-ray tubes
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1949-06-09
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Granted: 1950-09-12
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Expires: 1969-06-09
Abstract
No abstract record available.
Inventors
- 👤 Melvin B Kline
- 👤 Peter S Christaldi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:07
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/54; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/227; H04N3/23; H04N3/237
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2083203A
Cited
US2227484A
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US2170944A
Cited
US2183634A
Cited
US2422100A
Cited
US2457175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |