US3533682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Very high capacity optical memory system
Assignee: International Business Machines Corp
•
Filing: 1968-01-15
•
Granted: 1970-10-13
•
Expires: 1988-01-15
Abstract
No abstract record available.
Inventors
- 👤 Harold Fleisher
- 👤 Thomas J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:41
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/048
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2981140A
Cited
US3191157A
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US3167741A
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US3151520A
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US3084453A
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US3170980A
Cited
US3440620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |