US3525909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor for use in an emitter circuit with extended emitter electrode
Assignee: Siemens AG
•
Filing: 1967-09-08
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Granted: 1970-08-25
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Expires: 1987-09-08
Abstract
No abstract record available.
Inventors
- 👤 Gunther Eberhard
- 👤 Richard Wiesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:24
CPC Classifications
H; H10; H10W; H10W20/00; H10W20/40; H10D; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2981877A
Cited
US3204321A
Cited
US3292057A
Cited
US3316466A
Cited
US3373323A
Cited
US3336508A
Cited
US3426253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |