US2907000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double base diode memory
Assignee: Unisys Corp
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Filing: 1955-08-05
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Granted: 1959-09-29
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Expires: 1975-08-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph D Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/39
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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |