Patent US2988668A successfully refreshed from Google Patents.
US2988668A
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US
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High speed memory
Assignee: Unisys Corp
•
Filing: 1954-10-05
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Granted: 1961-06-13
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Expires: 1974-10-05
Abstract
No abstract record available.
Inventors
- 👤 Andrew J Lincoln
- 👤 George E Lund
- 👤 Loev David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:35
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/02; H01J29/10; H01J29/36; H01J29/39; H01J29/395; G; G11; G11C; G11C13/00; G11C13/04; G11C13/06; H01J31/00; H01J31/08; H01J31/58; H01J31/60; H01J31/62; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172738A
Cited
US2444221A
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US2459790A
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US2668718A
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US2513743A
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US2637785A
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US2547838A
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US2547638A
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US2782335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-12 | 1964-12-12 | 1965-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-12 | 1968-12-12 | 1969-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-12 | 1972-12-12 | 1973-06-13 | $7700.00 | Window Closed / Lapsed |