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US2698392A
Expired / Lapsed
US
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Phase sensitive rectifier-amplifier
Assignee: Individual
•
Filing: 1953-11-20
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Granted: 1954-12-28
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Expires: 1973-11-20
Abstract
No abstract record available.
Inventors
- 👤 Herman Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:31
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26; H03D; H03D1/00; H03D1/14; H03D1/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2653282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-27 | 1958-06-28 | 1958-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-27 | 1962-06-28 | 1962-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-27 | 1966-06-28 | 1966-12-28 | $7700.00 | Window Closed / Lapsed |