Patent US3163747A successfully refreshed from Google Patents.
US2826717A
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Sensitivity adjusting circuit
Assignee: Allen B du Mont Laboratories Inc
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Filing: 1950-09-23
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Granted: 1958-03-11
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Expires: 1970-09-23
Abstract
No abstract record available.
Inventors
- 👤 Maron Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:33
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)
US2221398A
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US2462849A
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US2543434A
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US2571051A
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US2550990A
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US2474177A
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US2542160A
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US2613271A
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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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |