Patent US3445826A successfully refreshed from Google Patents.
US3445826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optic storage device
Assignee: International Business Machines Corp
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Filing: 1966-01-03
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Granted: 1969-05-20
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Robert A Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/047; H; H01; H01S; H01S3/00; H01S3/10; H01S3/101
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
AN ELECTRO-OPTIC DEVICE COMPRISING: A CATHODE RAY TUBE HAVING A FACE COMPOSED OF A MATERIAL EXHIBITING AN ELECTRO-OPTIC AND PHOTOCONDUCTIVE EFFECT; AND CONTROL MEANS FOR ILLUMINATING SAID FACE TO ALTER THE CONDUCTIVITY THEREOF.
References Cited (Backward Citations)
US3164816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |