US3443173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Narrow emitter lateral transistor
Assignee: Sprague Electric Co
•
Filing: 1966-05-17
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Granted: 1969-05-06
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Expires: 1986-05-17
Abstract
No abstract record available.
Inventors
- 👤 Wei K Tsang
- 👤 Karl M Busen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:39
CPC Classifications
H; H10; H10D; H10D10/00; H10D10/60; H10D62/00; H10D62/80; H10D62/83; H10D62/834; H10D99/00; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/062
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) | 1972-05-05 | 1972-11-04 | 1973-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-05 | 1976-11-04 | 1977-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-05 | 1980-11-04 | 1981-05-06 | $7700.00 | Window Closed / Lapsed |