US2592683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage device utilizing semiconductor
Assignee: AT&T Inc
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Filing: 1950-12-30
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Granted: 1952-04-15
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Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Gray Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:05
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/52; H04Q3/521; G; G11; G11C; G11C11/00; G11C11/21; G11C11/23; G11C11/34; G11C11/39; H01; H01J; H01J31/00; H01J31/02; H01J31/04; H01J31/06; H01J31/08; H01J31/58; H01J31/60; H10; H10D; H10D99/00; H10F; H10F99/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |