US2427263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control circuits for cathode-ray apparatus
Assignee: Metropolitan Vickers Electrical Co Ltd
•
Filing: 1943-09-21
•
Granted: 1947-09-09
•
Expires: 1963-09-21
Abstract
No abstract record available.
Inventors
- 👤 Dodds John Mathieson
- 👤 Scoles Graham John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/26; H03K4/39; H03J; H03J7/00; H03J7/18; H03J7/32
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
US1994232A
Cited
US2130913A
Cited
US2082317A
Cited
US2279151A
Cited
US2273914A
Cited
US2312203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-08 | 1951-03-10 | 1951-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-08 | 1955-03-10 | 1955-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-08 | 1959-03-10 | 1959-09-09 | $7700.00 | Window Closed / Lapsed |