Patent US2749450A successfully refreshed from Google Patents.
US2749450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servo-motor load division control system
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1953-08-25
•
Granted: 1956-06-05
•
Expires: 1973-08-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph C Wellington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:43
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/38; H02J3/46
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1959163A
Cited
US2073426A
Cited
US2168575A
Cited
US2404968A
Cited
US2401163A
Cited
US2563179A
Cited
US2435419A
Cited
US2577003A
Cited
US2504768A
Cited
US2594133A
Cited
US2632856A
Cited
US2590023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |