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US2547637A
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US
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High-frequency antenna structure
Assignee: General Electric Co
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Filing: 1948-06-30
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Granted: 1951-04-03
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Expires: 1968-06-30
Abstract
No abstract record available.
Inventors
- 👤 Paul C Gardiner
- 👤 Charles W Frick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:26
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14; H01Q9/145
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2218923A
Cited
US2235521A
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US2261879A
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US2327418A
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US2313513A
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US2344171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |