Patent US3023368A successfully refreshed from Google Patents.
US3023368A
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Direct coupled transistor amplifier
Assignee: SOUTHWESTERN IND ELECTRONICS C
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Filing: 1958-07-15
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Granted: 1962-02-27
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Expires: 1978-07-15
Abstract
No abstract record available.
Inventors
- 👤 Louis W Erath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:11
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/30; H03F3/3083; H03F3/3086; H03F3/3088
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2700704A
Cited
US2659775A
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US2691075A
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US2777020A
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US2762874A
Cited
US2789164A
Cited
US2942199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |