US2800586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial inductor
Assignee: Northrop Grumman Corp
•
Filing: 1953-07-31
•
Granted: 1957-07-23
•
Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 George H Towner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:07
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/46; H03H11/48; H03G; H03G5/00; H03G5/02; H03G5/04; H03G5/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2386892A
Cited
US2321269A
Cited
US2445508A
Cited
US2422424A
Cited
US2506329A
Cited
US2463073A
Cited
US2441567A
Cited
US2503046A
Cited
US2521694A
Cited
US2510787A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |