US2870440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conical scanning antenna systems as used in radar
Assignee: Lockheed Martin Corp
•
Filing: 1954-05-13
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Granted: 1959-01-20
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Expires: 1974-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jesse L Butler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:49
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/42; G01S13/422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2554936A
Cited
US2472782A
Cited
US2543130A
Cited
US2510020A
Cited
US2790169A
Cited
US2677056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |