Patent DE913330C successfully refreshed from Google Patents.
US3487413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide angle electronic scan luneberg antenna
Assignee: General Dynamics Corp
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Filing: 1966-12-30
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Granted: 1969-12-30
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Expires: 1986-12-30
Abstract
No abstract record available.
Inventors
- 👤 Marvin W Shores
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:43
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01Q3/245; H01Q5/00; H01Q5/40; H01Q5/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3045237A
Cited
US3116486A
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US3230536A
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US3287728A
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US3404405A
Cited
US3384890A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |