US3512102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multistage amplifier which prevents self-oscillations
Assignee: BBC Brown Boveri AG Germany
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Filing: 1968-03-11
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Granted: 1970-05-12
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Expires: 1988-03-11
Abstract
No abstract record available.
Inventors
- 👤 Hans Kubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:07
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/32; H03F1/33; H03F1/08; H03F1/083; H03F1/34; H03F1/36
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) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |