US2669658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase correction of asymmetric dual feed horns
Assignee: Westinghouse Electric Corp
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Filing: 1951-07-02
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Granted: 1954-02-16
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Expires: 1971-07-02
Abstract
No abstract record available.
Inventors
- 👤 Hagan L Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:43
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/06; H01Q19/08; H01P; H01P1/00; H01P1/16; H01P1/161; H01Q13/00; H01Q13/02; H01Q13/025; H01Q13/0258; H01Q19/10; H01Q19/12; H01Q19/13; H01Q19/132
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2398096A
Cited
US2423073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |