Patent US2780759A successfully refreshed from Google Patents.
US2780759A
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US
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Semiconductor rectifier device
Assignee: Westinghouse Electric Corp
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Filing: 1955-08-18
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Granted: 1957-02-05
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Expires: 1975-08-18
Abstract
No abstract record available.
Inventors
- 👤 John L Boyer
- 👤 August P Colaiaco
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:05
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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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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |