Patent US2535810A successfully refreshed from Google Patents.
US2535810A
Expired / Lapsed
US
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Minimizing electron optical distortions in electron camera tubes
Assignee: AT&T Inc
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Filing: 1947-08-26
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Granted: 1950-12-26
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Expires: 1967-08-26
Abstract
No abstract record available.
Inventors
- 👤 Bernard M Oliver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:25
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/70; H01J29/701; H01J2229/00; H01J2229/96; H01J2229/964
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2178093A
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US2131563A
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US2084509A
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US2147559A
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US2278478A
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US2413276A
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US2418133A
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US2407458A
Cited
US2472165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |