US2730712A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency modulated radar system
Assignee: Marconis Wireless Telegraph Co Ltd
•
Filing: 1950-10-09
•
Granted: 1956-01-10
•
Expires: 1970-10-09
Abstract
No abstract record available.
Inventors
- 👤 Dawson Leslie Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
H; H03; H03J; H03J7/00; H03J7/18; H03J7/32; G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/34; H03L; H03L7/00; H03L7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2114036A
Cited
US2296962A
Cited
US2389025A
Cited
US2527523A
Cited
US2473790A
Cited
US2547890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |