Patent US2488419A successfully refreshed from Google Patents.
US2488419A
Expired / Lapsed
US
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Antenna and lobe switcher
Assignee: RCA Corp
•
Filing: 1943-06-30
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Granted: 1949-11-15
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Expires: 1963-06-30
Abstract
No abstract record available.
Inventors
- 👤 Nils E Lindenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:37
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1960006A
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GB493695A
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US2189549A
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US2232592A
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US2228692A
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US2401344A
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US2404832A
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US2412159A
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US2412160A
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US2412161A
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US2414266A
Cited
US2411034A
Cited
US2410597A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-14 | 1953-05-16 | 1953-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-14 | 1957-05-16 | 1957-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-14 | 1961-05-16 | 1961-11-15 | $7700.00 | Window Closed / Lapsed |