US2943787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data checking apparatus
Assignee: International Computers and Tabulators Ltd
•
Filing: 1954-04-02
•
Granted: 1960-07-05
•
Expires: 1974-04-02
Abstract
No abstract record available.
Inventors
- 👤 Cartwright John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:47
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104; G06K; G06K5/00; G06K5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2684199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |