US3069658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matrix storage devices
Assignee: EMI Ltd
•
Filing: 1957-04-01
•
Granted: 1962-12-18
•
Expires: 1977-04-01
Abstract
No abstract record available.
Inventors
- 👤 Kramskoy Charles Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; G; G06; G06F; G06F9/00; G06F9/06; G06F9/22; G06F9/223; G06F9/44; G06F9/448; G06F9/4482; G06F9/4484; G06F9/4486; G11; G11C; G11C11/00; G11C11/02; G11C11/06; G11C11/06007; G11C11/06014; G11C11/06021; G11C11/06028; G11C11/06042; F; F02; F02D; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0289
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2750580A
Cited
US2708267A
Cited
US2856596A
Cited
US2768367A
Cited
US2802203A
Cited
US2785389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |