Patent US2501516A successfully refreshed from Google Patents.
US2501516A
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US
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Deflecting and focusing device for cathode-ray apparatus
Assignee: General Electric Co
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Filing: 1947-12-31
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Granted: 1950-03-21
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Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 Harold C Holden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:28
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/26; H01; H01J; H01J29/00; H01J29/46; H01J29/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB472165A
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GB523439A
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US2234720A
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US2431077A
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US2435613A
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US2416687A
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US2418487A
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US2428928A
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US2456399A
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US2440403A
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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) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |