US2805824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangements for checking the transcription of numbers and arithmetical operations effected in accounting machines
Assignee: Compagnie des Machines Bull SA
•
Filing: 1951-07-16
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Granted: 1957-09-10
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Expires: 1971-07-16
Abstract
No abstract record available.
Inventors
- 👤 Knutsen Knut Andreas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:35
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)
US1528567A
Cited
US1770089A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-09 | 1961-03-11 | 1961-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-09 | 1965-03-11 | 1965-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-09 | 1969-03-11 | 1969-09-10 | $7700.00 | Window Closed / Lapsed |