US2853649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Williams memory system using a double-intensity beam
Assignee: Individual
•
Filing: 1952-11-26
•
Granted: 1958-09-23
•
Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 William W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:16
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/23
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2666137A
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US2648061A
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US2706246A
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US2777971A
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US2671607A
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US2709230A
Cited
US2794937A
Cited
US2644855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |