US2475176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated radar system of superheterodyne type
Assignee: RCA Corp
•
Filing: 1946-11-30
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Granted: 1949-07-05
•
Expires: 1966-11-30
Abstract
No abstract record available.
Inventors
- 👤 Yuan Luke Chia-Lin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:33
CPC Classifications
H; H03; H03D; H03D11/00; H03D11/02; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; G01S13/345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2268587A
Cited
US2421394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |