US2430331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic focus control for cathode-ray tubes
Assignee: Unisys Corp
•
Filing: 1944-09-14
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Granted: 1947-11-04
•
Expires: 1964-09-14
Abstract
No abstract record available.
Inventors
- 👤 Pasquale F Galella
- 👤 Joseph A Brustman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:58
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/64; H01J29/66
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1923252A
Cited
US2051372A
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US2137262A
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US2116671A
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US2078644A
Cited
US2255485A
Cited
US2369631A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-03 | 1951-05-05 | 1951-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-03 | 1955-05-05 | 1955-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-03 | 1959-05-05 | 1959-11-04 | $7700.00 | Window Closed / Lapsed |