Patent US3496481A successfully refreshed from Google Patents.
US3496481A
Expired / Lapsed
US
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Automatic gain control system with noise variable threshold
Assignee: CBS Broadcasting Inc
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Filing: 1967-02-02
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Granted: 1970-02-17
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Expires: 1987-02-02
Abstract
No abstract record available.
Inventors
- 👤 Emil Torick
- 👤 Richard G Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:53
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/32; H03G3/34; H03G3/344
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |