US2458700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correction device for electronic function generators
Assignee: RCA Corp
•
Filing: 1945-09-28
•
Granted: 1949-01-11
•
Expires: 1965-09-28
Abstract
No abstract record available.
Inventors
- 👤 Greenough Maurice Leighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:54
CPC Classifications
H; H01; H01F; H01F21/00; H01F21/02; H01F21/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1572688A
Cited
US2156055A
Cited
US2229461A
Cited
US2174017A
Cited
US2114189A
Cited
US2318271A
Cited
US2340731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |