Patent US2838742A successfully refreshed from Google Patents.
US2586151A
Expired / Lapsed
US
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Electronic switching
Assignee: RCA Corp
•
Filing: 1948-02-26
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Granted: 1952-02-19
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Expires: 1968-02-26
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:57
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/268; H03; H03K; H03K17/00; H03K17/51; H03K17/52; H03K17/54; H04N11/00; H04N11/06; H04N11/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2043484A
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US2405096A
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US2404697A
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US2426454A
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US2398150A
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US2369662A
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US2428617A
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US2442428A
Cited
US2484084A
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US2457819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |