US2776091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus for computing a check symbol
Assignee: Compagnie des Machines Bull SA
•
Filing: 1951-06-14
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Granted: 1957-01-01
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Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Chenus Pierre Jacques Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:07
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1008; G06F11/1012; G06F11/104; G06F7/00; G06F7/38; G06F7/40; G06F7/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2364540A
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GB614639A
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US2436178A
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US2428811A
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US2404250A
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US2434499A
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US2486809A
Cited
GB650685A
Cited
US2502360A
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US2538636A
Cited
US2565511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |