Patent US2598432A successfully refreshed from Google Patents.
US2452349A
Expired / Lapsed
US
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Directive radio antenna
Assignee: General Electric Co
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Filing: 1942-12-24
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Granted: 1948-10-26
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Expires: 1962-12-24
Abstract
No abstract record available.
Inventors
- 👤 Howard I Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:12
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1931980A
Cited
US2083242A
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US2133615A
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US2115788A
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GB497147A
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US2231929A
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US2419556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |