US2736881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data storage device with magnetostrictive read-out
Assignee: British Tabulating Machine Co Ltd
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Filing: 1952-04-22
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Granted: 1956-02-28
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Expires: 1972-04-22
Abstract
No abstract record available.
Inventors
- 👤 Booth Andrew Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:29
CPC Classifications
G; G11; G11C; G11C21/00; G11C21/02; G11C21/026; G11C8/00; G11C8/005
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |