US3085208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical ratio control magnetic amplifier
Assignee: Schneider Electric Systems USA Inc
•
Filing: 1958-09-15
•
Granted: 1963-04-09
•
Expires: 1978-09-15
Abstract
No abstract record available.
Inventors
- 👤 Horace E Darling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:39
CPC Classifications
H; H03; H03F; H03F9/00; H03F9/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2338423A
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US2730574A
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US2704823A
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US2903523A
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US2677099A
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US2700130A
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US2882352A
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US2945218A
Cited
US2858380A
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US2931577A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-08 | 1966-10-08 | 1967-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-08 | 1970-10-08 | 1971-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-08 | 1974-10-08 | 1975-04-09 | $7700.00 | Window Closed / Lapsed |