US2777058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video-signal tone-adjusting network
Assignee: Fairchild Semiconductor Corp
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Filing: 1951-09-28
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Granted: 1957-01-08
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Expires: 1971-09-28
Abstract
No abstract record available.
Inventors
- 👤 John A Boyajean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:16
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/40; H04N1/407; H04N5/00; H04N5/14; H04N5/20; H04N5/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB418811A
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US2098370A
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US2021920A
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GB475446A
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US2212832A
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US2342238A
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US2552348A
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US2453958A
Cited
US2600423A
Cited
US2641649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |