US2423646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battery charger with reversible feature
Assignee: Individual
•
Filing: 1945-02-06
•
Granted: 1947-07-08
•
Expires: 1965-02-06
Abstract
No abstract record available.
Inventors
- 👤 Leroy R Flippen
- 👤 Fred L Hennefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J7/04; H02J7/90; H10; H10W; H10W20/00; H10W20/40; H10W20/49; H10W20/491
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2121421A
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US2179118A
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US2253131A
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US2229729A
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US2364802A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |