US2759669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error checking device for recordcontrolled accounting machine
Assignee: Compagnie des Machines Bull SA
•
Filing: 1950-10-17
•
Granted: 1956-08-21
•
Expires: 1970-10-17
Abstract
No abstract record available.
Inventors
- 👤 Knutsen Knut Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1526467A
Cited
US2016681A
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US2328654A
Cited
US2416625A
Cited
US2388354A
Cited
US2480744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |