US2492700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube circuit
Assignee: AT&T Inc
•
Filing: 1945-03-19
•
Granted: 1949-12-27
•
Expires: 1965-03-19
Abstract
No abstract record available.
Inventors
- 👤 Paul A Jeanne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:59
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USRE22150E
Cited
US2313967A
Cited
US2368448A
Cited
US2375709A
Cited
US2368449A
Cited
US2386728A
Cited
US2363810A
Cited
US2399955A
Cited
US2453711A
Cited
US2414323A
Cited
US2355363A
Cited
US2399754A
Cited
US2428926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |