Patent US2471246A successfully refreshed from Google Patents.
US2471246A
Expired / Lapsed
US
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Electronic apparatus
Assignee: RCA Corp
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Filing: 1944-05-25
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Granted: 1949-05-24
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Expires: 1964-05-25
Abstract
No abstract record available.
Inventors
- 👤 Lester C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/32; G01R13/325; H; H03; H03K; H03K6/00; H03K6/02; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/22; H04N3/227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2153140A
Cited
US2173497A
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US2231591A
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US2286894A
Cited
US2267120A
Cited
US2240605A
Cited
US2319139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |