US2525544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cathode-ray tube control circuits
Assignee: Individual
•
Filing: 1947-02-20
•
Granted: 1950-10-10
•
Expires: 1967-02-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond E Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:12
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2140004A
Cited
US2188845A
Cited
US2281948A
Cited
US2335780A
Cited
US2355363A
Cited
US2428038A
Cited
US2360857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |