US2709042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Registering device for electronic calculating machines
Assignee: CIVILE D'ETUDES DE CALCUL AUTOMATIQUE Ste
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Filing: 1950-06-19
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Granted: 1955-05-24
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Expires: 1970-06-19
Abstract
No abstract record available.
Inventors
- 👤 Couffigual Pierre Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:40
CPC Classifications
G; G11; G11C; G11C11/00; G11C11/21; G11C11/26; G11C11/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2308778A
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US2317471A
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US2556614A
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US2524123A
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US2489325A
Cited
US2570279A
Cited
US2558178A
Cited
US2607891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |