US2399754A
Expired / Lapsed
US
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Cathode-ray apparatus
Assignee: AT&T Inc
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Filing: 1943-01-09
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Granted: 1946-05-07
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Expires: 1963-01-09
Abstract
No abstract record available.
Inventors
- 👤 Merton R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:57
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-05-06 | 1949-11-05 | 1950-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-05-06 | 1953-11-05 | 1954-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-05-06 | 1957-11-05 | 1958-05-07 | $7700.00 | Window Closed / Lapsed |