US3376494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High frequency controlled rectifier circuit
Assignee: Hawker Eternacell Inc
•
Filing: 1965-05-20
•
Granted: 1968-04-02
•
Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Bruce L Wilkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:53
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/02; H02M7/04; H02M7/12; H02M7/145; H02M7/155; H02M7/1552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3211985A
Cited
US3221241A
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US3213351A
Cited
US3277360A
Cited
US3300706A
Cited
US3281645A
Cited
US3299341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-02 | 1971-10-02 | 1972-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-02 | 1975-10-02 | 1976-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-02 | 1979-10-02 | 1980-04-02 | $7700.00 | Window Closed / Lapsed |