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US2655624A
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Multielectrode semiconductor crystal element
Assignee: Compagnie des Freins et Signaux Westinghouse SA
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Filing: 1951-01-18
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Granted: 1953-10-13
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Expires: 1971-01-18
Abstract
No abstract record available.
Inventors
- 👤 Welker Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/01; H10D64/00; H10D64/20; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/90
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) | 1956-10-12 | 1957-04-13 | 1957-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-12 | 1961-04-13 | 1961-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-12 | 1965-04-13 | 1965-10-13 | $7700.00 | Window Closed / Lapsed |