US3017559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverter-charger circuit
Assignee: Duracell Inc USA
•
Filing: 1958-01-09
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Granted: 1962-01-16
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Expires: 1978-01-09
Abstract
No abstract record available.
Inventors
- 👤 Mallory Henry Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:40
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/66; H02M7/68; H02M7/72; H02M7/79; H02M7/797; H02J; H02J7/00; H02J7/02; H05; H05B; H05B41/00; H05B41/14; H05B41/30; H05B41/32; H02J2207/00; H02J2207/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2423646A
Cited
US2505185A
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US2555630A
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US2783384A
Cited
US2817761A
Cited
US2843815A
Cited
US2783380A
Cited
US2951994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |