Patent US2386548A successfully refreshed from Google Patents.
US2386548A
Expired / Lapsed
US
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Apparatus for providing regulated direct current voltage
Assignee: Emerson Radio Corp
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Filing: 1943-03-05
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Granted: 1945-10-09
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Expires: 1963-03-05
Abstract
No abstract record available.
Inventors
- 👤 Fogel Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:01
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)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-10-08 | 1949-04-09 | 1949-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-10-08 | 1953-04-09 | 1953-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-10-08 | 1957-04-09 | 1957-10-09 | $7700.00 | Window Closed / Lapsed |