US2674728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional memory device
Assignee: Individual
•
Filing: 1949-04-26
•
Granted: 1954-04-06
•
Expires: 1969-04-26
Abstract
No abstract record available.
Inventors
- 👤 John T Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:11
CPC Classifications
G; G06; G06K; G06K17/00; Y; Y10; Y10S; Y10S221/00; Y10S221/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1715666A
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US2080100A
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US2167459A
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US2435066A
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US2481398A
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US2517559A
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US2528161A
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US2540654A
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US2620389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |