US2758247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gated video amplifier circuitry
Assignee: Gilfillan Bros Inc
•
Filing: 1951-09-21
•
Granted: 1956-08-07
•
Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:10
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01S7/06; G01S7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2480837A
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US2368448A
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US2423104A
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US2542032A
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US2449792A
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US2519377A
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US2488386A
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US2565839A
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US2560815A
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US2634368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |