US3407404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directive microwave antenna capable of rotating about two intersecting axes
Assignee: AT&T Inc
•
Filing: 1964-10-05
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Granted: 1968-10-22
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 John S Cook
- 👤 Franz T Geyling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:42
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q19/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2540518A
Cited
US3105969A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |