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Patent US2679554A successfully refreshed from Google Patents.
US2679554A
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Electronic switching apparatus
Assignee: General Electric Co
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Filing: 1950-05-31
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Granted: 1954-05-25
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Expires: 1970-05-31
Abstract
No abstract record available.
Inventors
- 👤 Winslow L Hurford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:40
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/268
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2240420A
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US2434929A
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US2412279A
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US2535471A
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US2535325A
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US2521824A
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US2490561A
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US2516556A
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US2610260A
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US2546338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-24 | 1957-11-23 | 1958-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-24 | 1961-11-23 | 1962-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-24 | 1965-11-23 | 1966-05-25 | $7700.00 | Window Closed / Lapsed |