Patent US2631200A successfully refreshed from Google Patents.
US2631200A
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US
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Gain control circuit
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1950-09-23
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Granted: 1953-03-10
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Peter S Christaldi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:51
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/02; H03G3/04; H03G3/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2070071A
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US2240635A
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US2208254A
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US2310342A
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US2329073A
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GB584191A
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US2471449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |