US3448437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic memory device
Assignee: United States Department of the Army
•
Filing: 1965-12-22
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Granted: 1969-06-03
•
Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Charles W H Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:33
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/22; G11C8/00; G11C8/005; H; H03; H03K; H03K3/00; H03K3/02; H03K3/45
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3042904A
Cited
US3104377A
Cited
US3246164A
Cited
US3264618A
Cited
US3253166A
Cited
US3286205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |