US2553039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube combined beam centering and deflection device
Assignee: Zenith Electronics LLC
•
Filing: 1949-04-26
•
Granted: 1951-05-15
•
Expires: 1969-04-26
Abstract
No abstract record available.
Inventors
- 👤 Richard O Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:19
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2004099A
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US2188579A
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US2102421A
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GB464637A
Cited
US2157182A
Cited
US2211613A
Cited
US2177688A
Cited
US2200039A
Cited
US2207777A
Cited
US2456474A
Cited
US2499065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |