US3475736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamellate optically responsive memory arrangement
Assignee: AT&T Inc
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Filing: 1965-12-23
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Granted: 1969-10-28
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Expires: 1985-12-23
Abstract
No abstract record available.
Inventors
- 👤 Stewart K Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:30
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; G02F1/01; G02F1/03; G02F1/0338; G11; G11C; G11C13/00; G11C13/04; G11C13/047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |