US2723346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delayed switching circuit
Assignee: Northrop Grumman Corp
•
Filing: 1951-04-23
•
Granted: 1955-11-08
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Vernon P Magnuson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:34
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2111386A
Cited
US2208349A
Cited
US2298210A
Cited
US2463318A
Cited
US2411531A
Cited
US2543445A
Cited
US2483126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |