Patent US2933662A successfully refreshed from Google Patents.
US2933662A
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US
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Semiconductor rectifier device
Assignee: Westinghouse Electric Corp
•
Filing: 1954-01-14
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Granted: 1960-04-19
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Expires: 1974-01-14
Abstract
No abstract record available.
Inventors
- 👤 John L Boyer
- 👤 August P Colaiaco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:36
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/30; H10D; H10D99/00; H10P; H10P95/00; H10W40/00; H10W40/20; H10W40/25; H10W40/251; H10W40/40; H10W40/47; H10W40/60; H10W40/611; H10W72/20; H10W76/00; H10W76/10; H10W76/12; H10W76/161; H10W40/625; H10W72/071; H10W72/073; H10W72/07331; H10W72/07336
Claims Analysis
Total Claims: 0
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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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |