US2987659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unipolar "field effect" transistor
Assignee: Individual
•
Filing: 1956-02-13
•
Granted: 1961-06-06
•
Expires: 1976-02-13
Abstract
No abstract record available.
Inventors
- 👤 Teszner Stanislas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2746121A
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US2755536A
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US2776381A
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US2784478A
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US2778956A
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US2805397A
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US2836797A
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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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |