Patent US3441828A successfully refreshed from Google Patents.
US3441828A
Expired / Lapsed
US
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Scr phase responsive power control circuit having extended analog range
Assignee: Doall Co
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Filing: 1965-02-17
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Granted: 1969-04-29
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Expires: 1985-02-17
Abstract
No abstract record available.
Inventors
- 👤 Richard J Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:17
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/28; H02P7/285; H02P7/292; H02P7/293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3223911A
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US3241024A
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US3277362A
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US3274397A
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US3299347A
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US3341759A
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US3304487A
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US3287576A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |