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Patent US2611081A successfully refreshed from Google Patents.
US2611081A
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Automatic gain control system
Assignee: Unisys Corp
•
Filing: 1948-11-22
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Granted: 1952-09-16
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Expires: 1968-11-22
Abstract
No abstract record available.
Inventors
- 👤 Benjamin F Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:17
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H03G3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2013121A
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US2068769A
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GB471812A
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US2183206A
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US2253450A
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US2243141A
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US2397830A
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US2420248A
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US2527617A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |