US2841792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Directional array employing laminated conductor
Assignee: AT&T Inc
•
Filing: 1951-12-29
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Granted: 1958-07-01
•
Expires: 1971-12-29
Abstract
No abstract record available.
Inventors
- 👤 James O Edson
- 👤 Carl E Scheideler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:03
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/28; H01Q19/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1701278A
Cited
US1745342A
Cited
US2088949A
Cited
US2282402A
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US2380519A
Cited
US2440597A
Cited
US2433181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |