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US2553672A
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Amplification and demodulation system
Assignee: RCA Corp
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Filing: 1948-09-24
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Granted: 1951-05-22
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Expires: 1968-09-24
Abstract
No abstract record available.
Inventors
- 👤 Pan Wen Yuan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:42
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/08; H03D1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB377639A
Cited
US2017020A
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US2005789A
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US2038285A
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US2151757A
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GB487627A
Cited
US2453078A
Cited
US2452132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |