US3066294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical antennas coupled to circular waveguide carrying orthogonal modes
Assignee: General Electric Co
•
Filing: 1957-03-18
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Granted: 1962-11-27
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Expires: 1977-03-18
Abstract
No abstract record available.
Inventors
- 👤 Paul M Pan
- 👤 Charles B Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:24
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2514679A
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US2644930A
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US2747184A
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US2748352A
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GB724795A
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US2764756A
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US2817823A
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US2759099A
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GB762415A
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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) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |