US3439348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrooptical memory
Assignee: International Business Machines Corp
•
Filing: 1966-01-14
•
Granted: 1969-04-15
•
Expires: 1986-01-14
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Harris
- 👤 Kurt M Kosanke
- 👤 Werner W Kulcke
- 👤 Erhard Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:53
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; G; G11; G11C; G11C13/00; G11C13/04; G11C17/00; G11C17/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3248552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |