US2952840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intelligence storage devices
Assignee: International Standard Electric Corp
•
Filing: 1955-03-08
•
Granted: 1960-09-13
•
Expires: 1975-03-08
Abstract
No abstract record available.
Inventors
- 👤 Ridler Desmond Sydney
- 👤 Grimmond Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:53
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2474988A
Cited
US2736880A
Cited
US2776411A
Cited
US2784391A
Cited
US2724103A
Cited
US2792563A
Cited
US2732542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |