US3448282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical and gate
Assignee: International Business Machines Corp
•
Filing: 1968-01-12
•
Granted: 1969-06-03
•
Expires: 1988-01-12
Abstract
No abstract record available.
Inventors
- 👤 Harold Fleisher
- 👤 Thomas J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:36
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0333; G02F3/00; G11C13/047; G11C13/048; G11C15/00; G11C17/00
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) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |