US2883591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor rectifier device
Assignee: Westinghouse Electric Corp
•
Filing: 1954-10-04
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Granted: 1959-04-21
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Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Henry R Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
F; F28; F28D; F28D15/00; F28D15/02; F28F; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; H; H10; H10W; H10W40/00; H10W40/70; H10W40/73
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2189617A
Cited
US2288341A
Cited
US2430904A
Cited
US2345499A
Cited
DE823765C
Cited
FR1050940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-20 | 1962-10-20 | 1963-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-20 | 1966-10-20 | 1967-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-20 | 1970-10-20 | 1971-04-21 | $7700.00 | Window Closed / Lapsed |