US2628309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic storage device
Assignee: International Business Machines Corp
•
Filing: 1951-12-31
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Granted: 1953-02-10
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Expires: 1971-12-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Ernest S Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:53
CPC Classifications
H; H03; H03K; H03K21/00; G; G11; G11C; G11C19/00; G11C19/20; G11C19/202
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) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |