US3409815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual rate battery charger with high rate controlled by amount of discharge
Assignee: AB Chance Co
•
Filing: 1966-05-03
•
Granted: 1968-11-05
•
Expires: 1986-05-03
Abstract
No abstract record available.
Inventors
- 👤 Robert L Wright
- 👤 Philip G Chance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:24
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/90; H02J7/94
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1121892A
Cited
US1786280A
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US1812628A
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US2635221A
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US3018432A
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US3271652A
Cited
US3302091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-05 | 1972-05-06 | 1972-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-05 | 1976-05-06 | 1976-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-05 | 1980-05-06 | 1980-11-05 | $7700.00 | Window Closed / Lapsed |