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US3454865A
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High voltage reducing circuit using low voltage silicon controlled rectifier
Assignee: CHARLES A ELLERT
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Filing: 1966-09-27
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Granted: 1969-07-08
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Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 Charles A Ellert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:57
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1555
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3161759A
Cited
US3241043A
Cited
US3201617A
Cited
US3299341A
Cited
US3275802A
Cited
US3284666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |