US2795706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferroresonant circuits
Assignee: National Research Development Corp UK
•
Filing: 1954-06-14
•
Granted: 1957-06-11
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Barker Ronald Hugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:13
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/388; G11; G11C; G11C19/00; G11C19/12; H; H03; H03K; H03K19/00; H03K19/02; H03K19/16; H03K19/164; H03K3/00; H03K3/02; H03K3/45; H03K3/49
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2653254A
Cited
US2682615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |