US2579223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated power supply
Assignee: Individual
•
Filing: 1945-06-27
•
Granted: 1951-12-18
•
Expires: 1965-06-27
Abstract
No abstract record available.
Inventors
- 👤 William R Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
H; H03; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/14; G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |