Patent US2525919A successfully refreshed from Google Patents.
US2525919A
Expired / Lapsed
US
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Centering arrangement for cathode-ray tubes
Assignee: Hazeltine Research Inc
•
Filing: 1948-07-01
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Granted: 1950-10-17
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Expires: 1968-07-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur V Loughren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:37
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/82; H01J29/823; H01J29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2102421A
Cited
US2200039A
Cited
US2369796A
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US2416687A
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US2418487A
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US2456474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |