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Patent US2644080A successfully refreshed from Google Patents.
US2644080A
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Self-quench superregenerative amplifier
Assignee: Hazeltine Research Inc
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Filing: 1948-05-22
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Granted: 1953-06-30
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Expires: 1968-05-22
Abstract
No abstract record available.
Inventors
- 👤 Richman Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:49
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1424065A
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US1726806A
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GB369983A
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AU1227333A
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US2071950A
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US2091546A
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US2412710A
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US2504636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |