US3317850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-stable differential amplifier using field-effect devices
Assignee: Fairchild Semiconductor Corp
•
Filing: 1963-04-29
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Granted: 1967-05-02
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 David F Hilbiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:00
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/45; H03F3/45071; H03F3/45076; H03F3/45376; H10; H10D; H10D84/00; H10D84/80; H10D84/87; H10D99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3024422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |