Patent US2644869A successfully refreshed from Google Patents.
US2644869A
Expired / Lapsed
US
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Voltage regulator and current control device for automotive vehicles
Assignee: Individual
•
Filing: 1952-01-04
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Granted: 1953-07-07
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Expires: 1972-01-04
Abstract
No abstract record available.
Inventors
- 👤 Sevison Luther Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:16
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/22; H02J7/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1513247A
Cited
US1876295A
Cited
GB536695A
Cited
US2286800A
Cited
US2299669A
Cited
US2440265A
Cited
US2434909A
Cited
US2564877A
Cited
US2570315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |