Patent US2005173A successfully refreshed from Google Patents.
Patent US2800528A successfully refreshed from Google Patents.
US2800528A
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Video amplifier bridge circuit for minimizing supply voltage variations
Assignee: Allen B du Mont Laboratories Inc
•
Filing: 1949-06-23
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Granted: 1957-07-23
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Expires: 1969-06-23
Abstract
No abstract record available.
Inventors
- 👤 Harold E Beste
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:57
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782
Claims Analysis
Total Claims: 0
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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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |