US2624039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct current regulated power supply
Assignee: Northrop Grumman Corp
•
Filing: 1951-04-23
•
Granted: 1952-12-30
•
Expires: 1971-04-23
Abstract
No abstract record available.
Inventors
- 👤 Clinton O Jorgensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:19
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB472326A
Cited
US2210393A
Cited
US2268790A
Cited
US2377500A
Cited
US2419496A
Cited
US2474269A
Cited
US2528569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |