US3497622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gain control
Assignee: Zenith Electronics LLC
•
Filing: 1966-10-21
•
Granted: 1970-02-24
•
Expires: 1986-10-21
Abstract
No abstract record available.
Inventors
- 👤 Joseph Markin
- 👤 Alan Sobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:11
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2338551A
Cited
US2616971A
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US2991358A
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US3109066A
Cited
US3057960A
Cited
US3296373A
Cited
US3290442A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |