US3470545A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thin film memory construction having magnetic keeper plates
Assignee: AT&T Inc
•
Filing: 1966-09-08
•
Granted: 1969-09-30
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Peter I Bonyhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:05
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/02; G11C11/16; G11C11/14; G11C11/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3083353A
Cited
US3069661A
Cited
US3245057A
Cited
US3349382A
Cited
US3317742A
Cited
US3259888A
Cited
US3341830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |