Patent US2324188A successfully refreshed from Google Patents.
US2324188A
Expired / Lapsed
US
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Signal means for battery charging circuits
Assignee: Exide Technologies LLC
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Filing: 1940-03-06
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Granted: 1943-07-13
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Expires: 1960-03-06
Abstract
No abstract record available.
Inventors
- 👤 Frank G Beetem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:57
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/02; H02J7/04; H02J7/12; H02J7/90; H02J7/933; Y; Y10; Y10S; Y10S320/00; Y10S320/18; Y10S320/21; Y10S320/22; Y10S320/24
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) | 1946-07-12 | 1947-01-11 | 1947-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-07-12 | 1951-01-11 | 1951-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-07-12 | 1955-01-11 | 1955-07-13 | $7700.00 | Window Closed / Lapsed |