Patent GB760179A successfully refreshed from Google Patents.
US2745021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo device amplifier circuit
Assignee: RCA Corp
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Filing: 1951-11-23
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Granted: 1956-05-08
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Expires: 1971-11-23
Abstract
No abstract record available.
Inventors
- 👤 Kurshan Jerome
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2233788A
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US2309329A
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US2499889A
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US2540144A
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US2486776A
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US2560606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |