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US2660624A
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High input impedance semiconductor amplifier
Assignee: RCA Corp
•
Filing: 1949-02-24
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Granted: 1953-11-24
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Expires: 1969-02-24
Abstract
No abstract record available.
Inventors
- 👤 Bergson Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:15
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/14; Y; Y10; Y10S; Y10S74/00; Y10S74/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2131366A
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US2489272A
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US2524035A
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US2486776A
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US2517960A
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US2476323A
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US2541322A
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US2585078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-23 | 1957-05-25 | 1957-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-23 | 1961-05-25 | 1961-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-23 | 1965-05-25 | 1965-11-24 | $7700.00 | Window Closed / Lapsed |