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
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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
2026-10-30 11:07
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/38; H02J3/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1959163A
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US2073426A
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US2168575A
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US2404968A
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US2401163A
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US2563179A
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US2435419A
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US2577003A
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US2504768A
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US2594133A
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US2632856A
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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 |