US2589807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical integration circuit
Assignee: United States, WAR, Secretary of
•
Filing: 1945-01-24
•
Granted: 1952-03-18
•
Expires: 1965-01-24
Abstract
No abstract record available.
Inventors
- 👤 William A Higinbotham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2212967A
Cited
US2282340A
Cited
US2188970A
Cited
US2300189A
Cited
US2241619A
Cited
US2414486A
Cited
US2489312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |