US2578342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflection coil assembly
Assignee: AT&T Inc
•
Filing: 1946-03-15
•
Granted: 1951-12-11
•
Expires: 1966-03-15
Abstract
No abstract record available.
Inventors
- 👤 Adolph C Ekvall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:29
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/10; H; H01; H01J; H01J29/00; H01J29/46; H01J29/54; H01J29/70; H01J29/72; H01J29/76; H01J29/764
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2188579A
Cited
US2102421A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-10 | 1955-06-11 | 1955-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-10 | 1959-06-11 | 1959-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-10 | 1963-06-11 | 1963-12-11 | $7700.00 | Window Closed / Lapsed |