Patent US2694115A successfully refreshed from Google Patents.
US2694115A
Expired / Lapsed
US
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Push-pull transistor amplifier with conjugate input and output impedances
Assignee: AT&T Inc
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Filing: 1954-02-17
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Granted: 1954-11-09
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Expires: 1974-02-17
Abstract
No abstract record available.
Inventors
- 👤 Larned A Meacham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:16
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/56; H03F1/565; H03F1/08; H03F1/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |