Patent US3466616A successfully refreshed from Google Patents.
US3466616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Memory device and method using dichroic defects
Assignee: International Business Machines Corp
•
Filing: 1965-10-22
•
Granted: 1969-09-09
•
Expires: 1985-10-22
Abstract
No abstract record available.
Inventors
- 👤 Walter E Bron
- 👤 Russell W Dreyfus
- 👤 William R Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:54
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/041
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2481622A
Cited
US3296594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-08 | 1973-03-10 | 1973-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-08 | 1977-03-10 | 1977-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-08 | 1981-03-10 | 1981-09-09 | $7700.00 | Window Closed / Lapsed |