US2596741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
External memory device for electronic digital computers
Assignee: Eastman Kodak Co
•
Filing: 1948-08-28
•
Granted: 1952-05-13
•
Expires: 1968-08-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur W Tyler
- 👤 Russell D O'neal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:50
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/2407; G11B7/24085; G06; G06K; G06K1/00; G06K1/12; G06K1/126; G11B27/00; G11B27/10; G11B27/36; G11B7/08; G11C; G11C13/00; G11C13/04; G11C13/048; G11B2220/00; G11B2220/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2091152A
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US2267827A
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US2283383A
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US2480636A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |