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Patent US2778933A successfully refreshed from Google Patents.
US2778933A
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Amplitude modulation detector which is phase responsive
Assignee: Unisys Corp
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Filing: 1951-08-25
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Granted: 1957-01-22
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Expires: 1971-08-25
Abstract
No abstract record available.
Inventors
- 👤 Philip W Crist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:26
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/08; H03D1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2416089A
Cited
US2413023A
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US2430139A
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US2565504A
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US2532338A
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US2531433A
Cited
US2505040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |