Patent US2282380A successfully refreshed from Google Patents.
US2282380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed-back circuit
Assignee: General Electric Co
•
Filing: 1938-07-26
•
Granted: 1942-05-12
•
Expires: 1958-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles S Root
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/34; H03F1/36; H03D; H03D1/00; H03D1/02; H03D1/06; H03G; H03G3/00; H03G3/02; H03G3/04; H03G3/06; H03G3/08; H03G9/00; H03G9/02; H03G9/04; H03G9/06; H03G9/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1945-05-11 | 1945-11-10 | 1946-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-05-11 | 1949-11-10 | 1950-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-05-11 | 1953-11-10 | 1954-05-12 | $7700.00 | Window Closed / Lapsed |