US2901166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital computer
Assignee: International Business Machines Corp
•
Filing: 1953-02-05
•
Granted: 1959-08-25
•
Expires: 1973-02-05
Abstract
No abstract record available.
Inventors
- 👤 Francis E Hamilton
- 👤 George V Hawkins
- 👤 Jr Robert E Lawhead
- 👤 Jr Ernest S Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:53
CPC Classifications
G; G06; G06F; G06F7/00; G06F7/38; G06F7/383; G06F7/386; G06F15/00; G06F15/76; G06F15/78
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2611813A
Cited
US2609143A
Cited
US2737342A
Cited
US2701095A
Cited
US2749037A
Cited
US2614169A
Cited
US2770797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |