US2691077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor power amplifier
Assignee: RCA Corp
•
Filing: 1951-03-31
•
Granted: 1954-10-05
•
Expires: 1971-03-31
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Koros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:31
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2323634A
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US2322264A
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US2302493A
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US2566057A
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US2524035A
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US2517960A
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US2541322A
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US2609459A
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US2533001A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-04 | 1958-04-05 | 1958-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-04 | 1962-04-05 | 1962-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-04 | 1966-04-05 | 1966-10-05 | $7700.00 | Window Closed / Lapsed |