US3530369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulator apparatus including static switching circuit having mid-tapped inductor
Assignee: Westinghouse Electric Corp
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Filing: 1969-05-09
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Granted: 1970-09-22
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Expires: 1989-05-09
Abstract
No abstract record available.
Inventors
- 👤 Raymond Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:08
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/352; G; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/025; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/14; G05F1/16; G05F1/20; G05F1/24; G05F1/26; G05F1/30; H02; H02M; H02M1/00; H02M1/08; H02M1/081; H02M5/00; H02M5/02; H02M5/04; H02M5/22; H02M5/25; H02M5/253; H02M5/257; H02M5/2573; H03K3/313; H02M1/0003; H02M1/0006; H02M5/10; H02M5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |