US2712602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflection-free antenna
Assignee: Telefonaktiebolaget LM Ericsson AB
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Filing: 1951-04-27
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Granted: 1955-07-05
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Expires: 1971-04-27
Abstract
No abstract record available.
Inventors
- 👤 Hallen Erik Gustaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:28
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/20; H01Q13/28; H01Q11/00; H01Q11/02; H01Q11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |