Patent US2562277A successfully refreshed from Google Patents.
US2562277A
Expired / Lapsed
US
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Metallic lens directive antenna system
Assignee: AT&T Inc
•
Filing: 1946-04-08
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Granted: 1951-07-31
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Expires: 1966-04-08
Abstract
No abstract record available.
Inventors
- 👤 Winston E Kock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:30
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/06; H01Q19/062; H01Q15/00; H01Q15/02; H01Q15/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1332410A
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US1496652A
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US1958996A
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US2035827A
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US2283935A
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US2376428A
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US2405242A
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US2415807A
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US2415352A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |