US2519650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery-charging system, including alternating current dynamo with regulator and rectifier
Assignee: Lucas Support Services Ltd
•
Filing: 1948-05-14
•
Granted: 1950-08-22
•
Expires: 1968-05-14
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Ralph Frederi Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:56
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/14; H02J7/16; H02J7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1204160A
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US1710755A
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US1985004A
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US2102141A
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US2134880A
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US2140349A
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US2179299A
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US2235330A
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US2306998A
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US2383722A
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US2374012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |