US3418559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for gating the scr's in an inverter, and standby power-supply and battery-charging system incorporating the same
Assignee: Lorain Products Corp
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Filing: 1964-03-11
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Granted: 1968-12-24
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Expires: 1984-03-11
Abstract
No abstract record available.
Inventors
- 👤 Paul E Rolfes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:29
CPC Classifications
H; H02; H02M; H02M7/00; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/062; Y; Y02; Y02B; Y02B70/00; Y02B70/30; Y04; Y04S; Y04S20/00; Y04S20/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1951482A
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US2263320A
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US3264548A
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US3075136A
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US3229111A
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US3215864A
Cited
US3248634A
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US3303408A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |