Patent US2568441A successfully refreshed from Google Patents.
US2568441A
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US
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Extended eange radio detection and ranging system
Assignee: General Electric Co
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Filing: 1944-01-27
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Granted: 1951-09-18
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Expires: 1964-01-27
Abstract
No abstract record available.
Inventors
- 👤 George W Fyler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:36
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/08; G01S13/10; G01S13/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT113233B
Cited
US1924174A
Cited
US1979225A
Cited
US2252447A
Cited
US2192975A
Cited
US2333688A
Cited
US2415095A
Cited
US2404527A
Cited
US2423024A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |