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US2844758A
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Method of making multicolor cathde-ray tube screens
Assignee: Hazeltine Research Inc
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Filing: 1954-08-30
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Granted: 1958-07-22
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Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jennings B Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:36
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2277
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2600579A
Cited
US2446440A
Cited
US2784341A
Cited
US2577368A
Cited
US2682478A
Cited
US2690979A
Cited
US2767346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |