US2913177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital multiplying arrangements for an electronic computer
Assignee: International Business Machines Corp
•
Filing: 1954-03-11
•
Granted: 1959-11-17
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Expires: 1974-03-11
Abstract
No abstract record available.
Inventors
- 👤 Petherick Edward John
- 👤 Rowley Geoffrey Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:36
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/48; G06F7/491; G06F7/498; G06F7/4983; G06F7/4985; H; H03; H03K; H03K21/00; H03K23/00; H03K23/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2486809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |