Patent US3418589A successfully refreshed from Google Patents.
US3418589A
Expired / Lapsed
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Complementary emitter follower amplifier biased for class a operation
Assignee: Unisys Corp
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Filing: 1965-10-06
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Granted: 1968-12-24
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Expires: 1985-10-06
Abstract
No abstract record available.
Inventors
- 👤 Yee Seening
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:10
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03F3/30; H03F3/3069; H03F3/3076
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2955257A
Cited
US3262062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |