Patent US2582490A successfully refreshed from Google Patents.
US2582490A
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US
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Thermionic valve integrating circuit
Assignee: The General Electric Company PLC
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Filing: 1950-08-30
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Granted: 1952-01-15
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Expires: 1970-08-30
Abstract
No abstract record available.
Inventors
- 👤 Land Leonard Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:49
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186; H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/10; H03K4/12; H03K4/20; H03K4/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2141343A
Cited
US2412485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |